Getting Started on the Next House Project

This weekend we “broke ground” on the next house project. The end goal of the project is to swap bedrooms with Will and renovate the guest room into a nursery. And since it is inside, it doesn’t actually involve breaking any ground.

The project is really a series of projects and juggling of rooms. It almost asks to be planned out using Microsoft Project. But I won’t. I’ll just think about it.

The first step was to convince Will to move rooms. He agreed in theory when we discussed it this summer, but didn’t seem too excited about it (until tonight). As part of the sell, I agreed to add a light switch to the room and some outlets (and a light to the closet). The goal for this weekend was for me to finish electrical work and for Susanna to clean out the bedroom closet. And we finished ahead of schedule. We finished by dinner last night. I can’t believe we lived in the room for so many years without a light switch and only one outlet. Sometimes I just need the right incentive to get moving on things.

Today we decided to rearrange our bedroom to the layout that Will wants. He wont’ move in this weekend, but he can see what it would look like. Now he can’t wait to move. We even convinced him to get rid of the couch he currently has in his room. He is getting our bed, and it is large enough for Targa to sleep in the bed with him.  I thought it would be difficult to get him to move. It turns out that it will be difficult to get him to wait.

The next step will be to move us into the guest room and Will’s belongings into our room. We will get that done in two weeks. Susanna will move his belongings and I will build bookshelves for his bedroom (they will go in the closet). Once we move him in, the only remaining thing will be to look for a bigger desk for him (eventually).

Once his old room is empty Susanna will paint the room and I will build shelves for the closets. Our plan is to have all that finished by early November, and have our belongings moved into the new bedroom.

Once we finish the room swap, we will gut and refinish the nursery with a goal of being done around Christmas – in plenty of time for Isabella. Anyone interested in helping install drywall?

Why the room swap? Will currently has the largest room in the house – we had the chimney taken out of the room a while ago, so it is now a reasonably useful room. It is also located next to what will be the nursery, so it will be a lot easier if we are near the baby. I also think Will is ready for a room that is a little smaller than his current room. He doesn’t use most of the space in his room, and I think he will be much more comfortable in the new room. And, as of tonight, Will completely agrees.

Christmas with Uncle Tom – 1984 (#TBT)

I’m on a roll. Why not another picture…

This one from Christmas at my mom’s house on Kuhlman Ln, Webster Groves, Missouri. I still have the train set – Will and Ben dug it out this summer to play with. And the clock on the mantle is in my workshop.

Christmas with Uncle Tom (1984)
Christmas with Uncle Tom (1984)

 

Pictures from Sweden

Susanna and her dad by his camp on the lake.
Susanna and her dad by his camp on the lake.
Susanna's sister, Sofia, setting up flowers at the church the day before her wedding.
Susanna’s sister, Sofia, setting up flowers at the church the day before her wedding.
Susanna, beautiful as always, ready for Sofia's wedding (and of course, 4 months pregnant).
Susanna, beautiful as always, ready for Sofia’s wedding (and of course, 4 months pregnant). Sofia had to fix Susanna’s hair the day before the wedding after declaring that the hair cut she got here before the trip looked like a 5-year-old had cut it. Rebecka added that she thought that Susanna had cut it herself. Both honest as only sisters can be.
Sweden_Grandparents
Hanging out with Susanna’s grandmothers (Ruth and Kerstin) in traditional dresses (Värendsdräkt) from their region in Sweden. Time for the reception and drinking to begin.

Weekend Pictures

This weekend was pretty busy. On Saturday we had Ben’s birthday party at a local park (Sawmill Park). It was a perfect location for a game of capture the flag. And with only 6 kids at the party, there was a lot of running. Even without a large turnout I think it was one of the better birthday parties that we have thrown.

Ben hanging out waiting for the party to start
Ben hanging out waiting for the party to start

The weather this weekend was perfect, not too hot and a nice breeze.

And more hanging out on the rocks at the park...
And more hanging out on the rocks at the park…

On Sunday, Susanna took Ben to the Drunken Pallet in New London for an afternoon of paining. Will and I took the afternoon to motor/sail the boat from the mooring on the Niantic River to the boat launch on the Thames River.

The weather was perfect for sailing with a good breeze on Long Island Sound and the tides were with us. The trip took about 4 hours, plus time to retrieve the boat and unstep the mast. We didn’t get much sailing done this year. With a new family member next summer and lots of family visiting we won’t put the boat in the water next season. If things work out we will sell the boat and in a couple of years look for a bigger one. I think having the boat in the water every summer is a bit much right now – I have too many things I like doing in addition to time on the water. Anyway, Ben has a power boat that we need to finish up and try to get in the water one of these summers.

Enjoying the motor down the Niantic River (photo by Will Curtis)
Enjoying the motor down the Niantic River (photo by Will Curtis)

…And It’s a Girl

A beautiful picture of the baby on her way.
A beautiful picture of the baby on her way.

Today we got good news. The baby is looking good and the ultrasound went very well. We could also tell that the baby is no longer an “it” and is now a “she.”

We expect that in mid-February we should have a new member in the family, Isabella Louise Curtis. Will and Ben will get a new baby sister and the dogs will gain a new human to pull ears, tails, and other private body parts.  Of course, ultrasounds aren’t 100%, so if “she is a he” (as Ben would say when he was little) then we’ll have to start the name game again.

Overall it has been a busy month and I haven’t found time to write in over a month. The past 5 weeks spanned a trip to Sweden for Sofia’s wedding, the boys returning to school, Susanna returning to work part-time, and a trip to Hawaii (yes, work is tough.) Hopefully as things calm down this fall I can catch up on posts and add pictures from the trips.

Building toolboxes with the boys

Benjamin's Japanese toolbox completed (minus handles). Made from maple and finished with shellac.
Benjamin’s Japanese toolbox completed (minus handles). Made from maple and finished with shellac.

I try to get the boys into the workshop a couple of times a year and build some smaller projects. It seems that it is an easier sell for Ben than for Will. However, Will does get into the projects once we get started (he just gets distracted easily – but who doesn’t).

This project was a pair of Japanese toolboxes. The boys picked out lumber earlier this week. Ben picked out a piece of maple, and Will picked out what appears to be pine.

The boxes are constructed with a simple box joint and cut nails. We are finishing them with shellac and wax. We were able to get Ben’s box completed today, and hopefully get Will’s finished tomorrow.

Joinery detail from Ben's toolbox.
Joinery detail from Ben’s toolbox.

We cut the joints on the table saw. The boys probably could have cut the joints using a hand saw in the pine, but the maple was way too hard to cut by hand. All the pieces were assembled using 2″ cut nails by Tremont Nail Company. I picked up some decorative rose-head nails to add to the character of the box. The battens on the top were nailed and clinched.

The first box turned out pretty nice. Now to find some nice handles to attach to the ends.

Finishing up projects

This weekend I (quite contrary to my ADHD desires) didn’t start any major projects and instead worked on finishing up some smaller ones. I know. Crazy. Finish projects and not start any. What fun is that? But it keeps the wife happy, so that is worth something.

Will's bat house hung on the side of the garage above the loft window.
Will’s bat house hung on the side of the garage above the loft window.

The boys and I added two more shelves to the lumber rack. We brought all the lumber up that was stored under the barn (and wasn’t already on the lumber rack under the barn). That allowed me to clean out a little under the workshop and get the trailer pushed all the way back in.

It was amazing to watch Will and Ben work together to bring up the lumber from under the workshop. Or rather, fail to work together, so each had to drag boards individually. But, I guess that is what brothers are for. Of course I didn’t take any pictures of the upgrades/cleaning so you will just have to take my word that I actually did the project. Susanna even helped by labeling the now-somewhat-organized stacks of lumber. In English and Swedish.

Last week Will and his friend, Morgan, painted the two bat houses that they had made with me a couple of weeks ago. Morgan didn’t have any exterior paint at her house, so both bat houses were painted with the green trim paint from our house and barn. Yesterday Will and I decided to hang his bat house. Will even helped me drag out the tall ladder and set it up. The bat house is high up on the south face of the garage (above the chicken coop). Now all we can do is wait and see if we get tenants.

Today I decided to make a quick spice rack. We have been keeping our spices on the bottom shelf of one of the kitchen cabinets next to the stove. It was a pain to find spices – they were a disorganized mess and one had to dig around lifting up bottles to find the desired spices. I had a few pieces of good plywood lying around, and all we needed was some steps in the cabinet to allow us to find the spices in the back. It took about an hour to cut the pieces to size and mill some sapele for the front edge of the rack. I couldn’t find my wood glue to attach the front edging, so I attached the front with a pair of screws. Anyway, the steps will be hidden underneath the spice bottles when it is filled in. The only reason I chose sapele was that I had two smaller pieces in the workshop and I didn’t feel like going out and pulling out something less expensive. And sapele isn’t really that expensive anyway.

And tonight, instead of cleaning up the workshop, I decided to write in my blog and push cleaning off for another day.

Spice rack installed. The back step is 4" deep for larger bottles. The front two are about 2" deep, with about 2" in front of the rack for a final row of bottles.
Spice rack installed. The back step is 4″ deep for larger bottles. The front two are about 2″ deep, with about 2″ in front of the rack for a final row of bottles.
Spice rack complete with spices.
Spice rack complete with spices.

Organizing the Dog Pen (or Reorganizing the Lumber Pile)

The lumber pile/junk storage/dog pen prior to reorganization.
The lumber pile/junk storage/dog pen prior to reorganization.

The last bay of the garage/carriage house is a large, unpaved area. For a long time it just served as an overflow storage area and nesting place for a large group of house sparrows. I had added a gate to the  opening so it doubled as a dog pen (in the summer). In the back of the bay I stacked a nice pile of red oak, hickory and maple to air dry. The wood pile wound up being a nice place for Tucker to sit when he got bored staring out the gate and a real pain in the a$$ when I wanted to get a board that was at the bottom of the pile.

A friend of mine is cutting up a large maple tree into slabs and needs a place to air-dry the wood for a couple of months before turning it over to a kiln. We have lots of room, if I just reorganized our stuff a bit. And I just really needed an excuse to build a lumber rack.

I had picked up boards cut from a single oak tree in Ledyard a couple of years ago, and they have been drying in the pile since then. All the other lumber was older and dry. So I could build a proper lumber rack and not worry about keeping the stickers between the rows of boards. Saturday night I headed to the home center and picked up a bunch of construction lumber to build a storage rack.

The lumber rack with most of the wood from the pile stacked on. I have lots of room for additional shelves (to be added one of these days).
The lumber rack with most of the wood from the pile stacked on. I have lots of room for additional shelves (to be added one of these days).

Sunday I emptied the barn and started building the rack. Of course, I found one of the posts for the barn had rotted, so I had a little project detour to replace that. But it wouldn’t be a good project without a few detours.  I had the rack mostly finished by that afternoon.

Yesterday I added the second row of shelving and stacked the remaining lumber from the pile on the shelf. The boys helped me clean and organize the rest of the space.  The next step will be to double up some of the 2x4s on the supports and add an additional shelf or two to help keep the lumber organized.

Today the boys helped carry up a few boards that didn’t fit on the lumber rack under the workshop and were just stacked down there. Okay, I have two lumber racks. I have a problem. I know. I have too much lumber. Of course, if you have a good deal… I’m always looking for more. I wouldn’t want to run out in the middle of a project.

But of course I have plans for the lumber. Though I’m sure I’ll never get around to it all:

  • Hickory: I have a bunch of heavy 8/4 boards that would make a nice workbench even though hickory is a pain to work with and the beams are heavy and a pain to move around. And I already have a functioning antique workbench. But it seems that making a workbench is sort of rite of passage.
  • Red Oak: I have a matched set of boards from a single tree. I was going to make bedroom furniture from it until Susanna said she likes cherry better than oak. So it will be used to make the boys furniture (and I already made night stands for them from some of it). I also have some random non-matched boards floating around. Red oak is way too common here and is usually used just for firewood (it is like it grows on trees almost).
  • Cherry: I have a bunch of cherry that Susanna and I picked up on a road trip to Western Massachusetts a couple of years ago. The cherry is for furniture for us and the house. Anyway, cherry is nicer to work with than oak.
  • Maple: I have maybe 8 boards left that a friend had gotten cheap on Craigslist before he decided that he had too many hobbies to continue making furniture. It is pretty nice spalted maple. I think the boys are going to claim a couple of boards to make Japanese toolboxes this month.
  • White Oak: A bunch of 8/4 and thicker boards. Okay, I don’t really know what I’m going to do with it. But white oak is strong and rot resistant, so it may go to outdoor projects.
  • Sapele: A few remaining boards from a stack that had gone to smaller projects and trim on the sailboat.
  • Cedar: A bunch of smaller boards that I really have no idea what to do with.
  • Some random other species: Mahogany (though the plank I have isn’t really mine, I just store it and look at it), Yellowheart, Fir, and I’m sure a few more. The boys keep taking the smaller pieces of wood and re-purposing them into swords and leaving the swords outside until they are no longer usable and become firewood and they need to make new swords.

How to Buy Cruising Sails by Judy Blumhorst

After reading my post about my experiences buying a cruising sail for the O’day 22 online, Judy Blumhorst of Hyde Sails Direct offered to provide her perspective on purchasing cruising sails online. I think that it is a good summary of what I found through my searches online for information when I was researching new sails.


How to Buy Cruising Sails Online

Understanding the basics
of Sail Design, sail cloth & construction

By Judy Blumhorst, June 2015

One of the biggest expenditures a recreational or cruising sailor ever faces is replacing their sails. As the owner of an online loft (www.HydeSailsDirect.com), I know that cost and longevity are the biggest concerns of most customers buying new sails.

The cheapest sails, however, aren’t always the best value over the long-term. They don’t hold their shape for very long and will need to be replaced much sooner.

Understanding the basics of sail design, sail construction and sail cloth engineering will help you get the most bang for your sail-budget buck, and keep the wool from being pulled over your eyes by unscrupulous online lofts.

Q: When do I need new sails?

A: When your sails were new, your sailmaker designed an ideal shape for your boat and your rig, the type of sailing you enjoy, and your local conditions. Over time your sail cloth deteriorated, and the sail lost the shape your sailmaker intended it to have. The loss of shape makes your boat harder to sail and reduces your sailing enjoyment. When your boat won’t point as well as it used to, heels more than it used to and is harder to control, it’s time for new sails.

Even though your sails may not have any tears or rips, you will enjoy sailing much more if you replace your sails when the original shape is lost.

Q: Why is good sail shape important?

A: Obviously good sail shape is important for racing, but increasingly cruisers are realizing the benefits of good shape. Good sail shape translates into less heeling, better pointing, easier boat handling, and the ability to handle higher winds comfortably.

Q: What difference does the sailcloth make to me?

A: High quality, name brand sailcloth has low stretch, holds its shape for a long time, and is durable so it has a long, useful service life. Sails that are made from low quality Dacron last a long time without ripping, but they lose their shape quickly.

Q: Woven Dacron or Laminate? What is the Difference?

A: Since the 1950’s, woven polyester (Dacron) has been the most popular material for cruising sails. Over time, boats grew larger and cruisers demanded better performance from their cruising boats. Sailmakers and cloth manufacturers needed improved fabrics that could resist higher loads and retain their shape better.

In the 1960’s and 1970, laminate sailcloths were invented to fill the need for better shape-holding. The early laminates were plagued by durability problems, and didn’t last very long. Laminates and Woven sailcloth have come a long way since then. Today, modern laminated sailcloth is more durable than the old laminates.

Laminates are made by gluing layers of different materials together to form a sandwich. Basic laminates consist of two layers of plastic film sandwiched around load-bearing yarns. The fibers are carbon, Spectra/Dyneema, Twaron, Technora, Kevlar, Pentax and polyester. For cruising laminates, an additional layer of polyester is laminated on the outside to improve the fabric’s resistance to UV, tears and abrasion. Generally speaking of durability, most sailmakers assume that three to five years of frequent use is a reasonable lifespan for laminated cruising sails. With less frequent use, cruising laminates will last longer.

Today, highly advanced woven Dacrons can carry much greater loads with less stretching. The most advanced Dacron sails hold their shape as well as cruising laminates and last longer.

In the past 10 or 15 years, Challenge Sailcloth developed a Dacron named Warp Drive for use in radial-panel sails that holds its shape as well as most cruising laminates. Contender Sailcloth and Dimension Polyant Sailcloth invented high-tech ways to blend polyester, Vectran, and Spectra/Dymeema yarns together into hybrid woven Dacron. (Challenge Sailcloth makes Hood Vekton , Contender Sailcloth offers “Hybrid Fibercon” and Dimension Polyant offers “HydraNet Radial”).

Q: Why are the new radial woven fabrics so important for cruisers?

A: Woven Tri-Radial cloths are a big deal because they let sailmakers design and build tri-radial sails in woven cloth. Dacron is still the most durable fabric in absolute terms. Tri-radial construction deforms less under loads. Tri-Radial sails of Dacron have excellent shape retention and excellent durability. That’s a powerful combination for long-term performance and long-term affordability – a lot of “bang for the buck” for cruisers.

Sailmakers orient the panels to resist all the loads better and retain shape over time better, compared to cross-cut sails. Dacron Tri-radial sails offer owners excellent durability for long service life as well as excellent shape life, at a price that would have been inconceivably low in past years.

One important point to remember if you are buying a new sail is that the cloth used for a tri-radial sail and the sailcloth used in a crosscut sail are not interchangeable. Modern woven cloth for tri-radial construction is considerably more expensive than sailcloth for cross-cut sails. Name brands are Challenge Warp Drive ($$), Contender Hybrid with dyneema ($$$) and HydraNet Radial with dyneema ($$$$).

Q: Who manufactures the best Woven Sailcloth?

A: In the United States and abroad, four major suppliers of sailcloth—Dimension Polyant, Bainbridge International, Challenge Sailcloth, and Contender Sailcloth—provide sailmakers with Dacron, Dacron blends, and laminate cloths and related materials to build strong, state-of-the-art headsails and mainsails.

Q: WHY ARE THERE SO many different Dacrons?

A: There are many reasons for the multitude of cloth styles and prices.

Sailcloth manufacturers build cloths to meet a wide range of price points, from budget to premium.

Sailcloth engineers design dozens of different types of cloth so the sailmaker can choose the best cloth that will have the best shape under load.

Q Why do some Dacrons cost much more than another? Aren’t they all the same.

A: The more expensive Dacrons generally stretch less. They cost more because the raw materials cost more, the technology is more complicated, and they take longer to weave. Also, cloth manufacturers can demand a higher price because low stretch Dacron makes a better sail.

However, economies of scale during production greatly affect the price of sail cloth. Popular cloths which are produced in greater quantities cost less.

Also, production lofts that buy in massive quantities get lower prices from the manufacturer, and save on transportation costs too.

Q I’m a Cruiser, not a racer. What is the best value in sails for Cruisers?

A: As a sailmaker, customers frequently tell me that they want to buy the least expensive sails I sell because “I’m not a racer. I don’t need fancy sails”. I think that’s the wrong perspective to have when you’re buying sails. The less expensive sails don’t retain their shape as long as better quality ones. You will have to replace the sails sooner because your boat sails poorly sooner

Here’s a better way to look at it: In general, you should buy sails made of the lowest stretch cloth you can afford. The only time this doesn’t apply is when you are going to sell the boat within one or two seasons. All things being equal, the less expensive fabrics don’t hold their shape as long as the more expensive ones. When your sails have lost their designed shape, it’s time to replace it — even if it hasn’t ripped.

Q: I’m on a budget. What cruising sails should I buy if I can’t afford the “best Dacron”?

A: The answer is the same as before: Buy the lowest stretch Dacron that you can afford! It will give you several years of good service. But in the long term, you will need to replace them sooner than the less expensive Dacron.

Q What should I tell my sailmaker when I’m buying new sails?

A: I’m sorry, but that’s a trick question! You can tell your sailmaker whatever you like, but it’s the sailmaker’s responsibility, not yours, to get all the important information necessary to select the right sail for your needs. At the least, the sailmaker should interview you to find out the following important needs:

  • Your sailing experience and level of skill
  • Your expectations about performance
  • Your expectation about durability
  • Your expectations about ease of use (Are you willing to “baby” the sail or are you more casual about how you treat your sails?)
  • Your time horizon for using the sails
  • Your sailing style (eg race vs cruise, set-and-forget cruiser vs string-pulling-trimming cruiser)
  • Budget
  • Miles/hours sailed per year,
  • Climate (humidity, UV)
  • Wind range and sea state on your cruising grounds.

Q: How do I avoid “getting the wool pulled over my eyes”

Unfortunately, there are a scam artists on the internet who sell inferior products, misrepresent the goods or use counterfeit imitations of name brand cloth. I have personally examined sails that were made of a less expensive, inferior Dacron sail cloth than promised. Those owners told me their horror stories when they hired me to be their sailmaker after being ripped off by a dishonest online loft.

It’s particularly easy to scam people buying new sails because the average sailor can’t tell the difference between cheap sailcloth and expensive sailcloth once the sail has been delivered. The crook substitutes cheap cloth for expensive cloth and pockets the difference. The substitution isn’t obvious for a year or longer, when the shape of the sail deteriorates rapidly. By then, it’s too late for the buyer to do much about it.

Ultimately, the most important factor in choosing your sailmaker is their reputation. Make sure you carefully check the reputation when you hire an online loft.

  • Do some research online about the firm. Check the Better Business Bureau and Google. There are very few complaints online about honest and competent sailmakers.
  • If you discover numerous complaints about quality or service during your online research, don’t buy from that business. As the saying goes “Where there’s smoke, there’s usually fire”.
  • Do some comparison shopping, but don’t be seduced by super low prices. There are several well established online sailmaker lofts with good reputations on Google. If a small non-name brand loft claims to be able to sell the same sail for 30% less than the other online lofts, exercise extreme caution. If the price at one online loft “is too good to be true” be very, very cautious. Don’t let the promise of a low price cloud your judgement.
  • Get the name of the person advising you on cloth selection online and check his sailing resume online.
  • Get the name of the person designing your sail and check his sailing resume online.
  • Get the name and physical address of the loft building your sails. Honest lofts don’t hide where their sails are built.

CAUTION IF YOU ARE BUYING SAILS ONLINE: The cost of the cloth is the biggest factor in the price. Protect yourself against a “bait and switch” on the cloth. Insist that the invoice shows the brand name and manufacturer’s style number of the cloth in writing. A weight designation is not a style or part number. Don’t accept vague descriptions that don’t include the style or part number!

Understanding loads on Sailsi

Challenge makes two versions of many of its super-premium & premium woven dacrons: High Aspect and Low Aspect. They engineer different constructions to align the strength of the fibers with the load direction of the sail. One is not better than the other. They are both engineered for a specific application.

Loads on High Aspect Sails

Loads on High Aspect Sails
Loads on High Aspect Sails

A high aspect sail is tall and narrow. By definition, the luff is at least 2.9 times as long the foot.

It generates the most load along the leech. A High Aspect cloth generally has larger fill yarns and is very strong in the fill direction. The warp yarns almost touch each other in the weave, creating tunnels in the construction which keeps the fill yarns geometrically straight and low stretch.

Loads on Low Aspect sails

Loads on a Low Aspect Sail
Loads on a Low Aspect Sail

A Low Aspect Sail is short and wide. By definition, the luff is less than 2.9 times the length of the foot. The loading directions are not parallel, and run more toward the center of the sail.

Low Aspect cloths generally have larger warp yarns than in a high aspect fabric, and while the fill yarn is bigger than the warp yarn, they are closer to equal size than in a High Aspect Cloth.

There is more even crimp between the two fibers. The even crimp allows the yarns to grab each other, thus creating a strong resistance to bias stretch.

Understanding How Panels for Sails Are Cut
Aligning loads with Low-Stretch Yarns

CrossCut Sails

Cross Cut Sail
Cross Cut Sail

Crosscut sails have long panels that go horizontally across the sail, perpendicular to the leech and the heaviest loads on the sail. The yarns that go the length of the cloth are called fill yarns. The warp yarns, which cross at 90 degrees, are woven over and under the straight fill yarns. The technical term for bending the yarn is called “crimping”.

For crosscut sail panels, yarns in the fill direction have minimal stretch because they are relatively straight. The yarns in the warp direction are comparatively stretchy because they are crimped.

Tri-Radial Sails

Tri-Radial Cut Sail
Tri-Radial Cut Sail

Tri-Radial sail panels align the straight warp yarn with the load direction. The panels must be cut parallel to the length, not width, of the sailcloth

The best Dacron cloths for Tri-Radial sails, like Challenge Warp Drive or North’s Radian, have zero crimp in the warp yarns. Challenge Warp Drive costs 200-300% as much as entry level Dacron for CrossCut Sails because it is very time-consuming to weave and produced in lower quantities than crosscut Dacron.

Designers cannot use fill oriented cloth to cut panels for tri-radial sails. If you do, the loads are being carried by the heavily crimped fill threads, and the cloth will stretch badly.

Beware of “knock-off” Tri-Radial Dacron sails at unbelievably low prices. Dishonest sail lofts sometimes use ordinary inexpensive fill-oriented Dacron to build Tri-Radial Sails and pass it off as Warp Drive. They get away with it because most buyers can’t feel or see the difference. The highly-crimped yarns are too stretchy to resist the loads in the sail, and the sail will stretch out of shape very quickly.

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Portions of the post above were reproduced or borrow heavily with permission from Challenge Sailcloth http://www.challengesailcloth.com