Search found 289 matches

by sedges
Thu Jul 25, 2019 5:17 pm
Forum: Builders' Forum
Topic: Short period without UV protection
Replies: 2
Views: 150

Re: Short period without UV protection

I would be more concerned about an incomplete cure going in the water and getting cloudy. Most boat epoxies take about a week to fully cure. I have always waited that period before finish sanding and varnishing. Exposure to water before a full cure may cause whitish cloudiness. Of course it may not!...
by sedges
Sat Mar 23, 2019 10:29 am
Forum: Builders' Forum
Topic: Bending wood strips
Replies: 7
Views: 784

Re: Bending wood strips

I suppose steaming is one solution. You will have to clamp the steamed strips in place until they cool and dry and then glue them. Steam boxes can be made of plywood or a length of PVC pipe. Electric tea pot is a typical steam generator. The other solution, and the best IMHO, is to let the strips ru...
by sedges
Fri Dec 14, 2018 2:42 pm
Forum: Boat-Building Tips & Techniques
Topic: Hand beveling
Replies: 9
Views: 1188

Re: Hand beveling

OK. 3/16 is not real thin. Lots of folks have used them at that thickness. I have run bead and cove on 3/16 with out any issues. I was using real straight grained cedar at the time. That tool for making the bevel looks real cool. Wish I had that back in the 1980s!
by sedges
Thu Dec 13, 2018 10:10 pm
Forum: Boat-Building Tips & Techniques
Topic: Hand beveling
Replies: 9
Views: 1188

Re: Hand beveling

How thin? What is the reason for "very thin strips"? The thinner the strips get the more flexible your composite will be given the same fiberglass lay-up. The separation of the inner and outer glass layers by the strips creates the stiffness in the hull. If you go too thin with the wood core the lay...
by sedges
Wed Dec 12, 2018 6:22 pm
Forum: Choosing a Design
Topic: First time Yak for my daughter
Replies: 3
Views: 841

Re: First time Yak for my daughter

I think the Venture would be a fine boat. Another excellent alternative and even shorter would be the John Winters design Tasman Sea. Steve Killing(Venture) and John Winters(Tasman Sea) have very similar ideas for small craft design and very very good ones, too.

http://www.greenval.com/tasman.html
by sedges
Wed Dec 12, 2018 6:10 pm
Forum: Boat-Building Tips & Techniques
Topic: Hand beveling
Replies: 9
Views: 1188

Re: Hand beveling

Of course, my first comment would be WHY??? Its not a simple bevel, but will change over the length of the strip. My first three canoes were hand planed bevels back in the early 1980s before I discovered the bead and cove methods. I could do maybe three strips each side in a day. With B&C and can la...
by sedges
Thu Sep 20, 2018 5:21 pm
Forum: Builders' Forum
Topic: brass screws for hanging seats
Replies: 12
Views: 1968

Re: brass screws for hanging seats

https://www.wooden-canoes.com/canoes/materials/hardware/ The source for SB 3/16 x 4 carriage bolts. The SS machine screws are listed as #10-24 rather than 3/16. If you look hard you might find Philips head, but all I found were slotted. Most marine supply places carry them. You can get 1/4 brass or ...
by sedges
Thu Sep 20, 2018 5:01 pm
Forum: Builders' Forum
Topic: brass screws for hanging seats
Replies: 12
Views: 1968

Re: brass screws for hanging seats

Yeah, well, we all want long small diameter brass or bronze bolts, but we are a tiny market and nobody else seems to want them. Sooo..... I never used longer than 4 inch silicon bronze carriage bolts in 3/16. They are still available, but costly. I always felt comfortable with seats that high. For t...
by sedges
Fri Sep 14, 2018 3:10 pm
Forum: Builders' Forum
Topic: Is that the minimum weight?
Replies: 4
Views: 1328

Re: Is that the minimum weight?

If your cloth puckers along the edges it is sometimes helpful to cut off the selvedge, the finished edge of the cloth. That releases the fibers to adjust to a contour a little better. I like to leave the selvedge on if I can, because its neat, but I don't hesitate to remove it if it will let the clo...
by sedges
Thu Sep 13, 2018 1:51 pm
Forum: Builders' Forum
Topic: Is that the minimum weight?
Replies: 4
Views: 1328

Re: Is that the minimum weight?

No glass on the inside is a bad idea. Any impact from the outside is absorbed by the inside glass. I would consider using lighter glass on both inside and out. A lot of weight is resin to fill the weave of the glass. Look at the thickness of various glass fabrics. Your 4 ounce glass is real thick, i...
by sedges
Wed Aug 08, 2018 9:08 am
Forum: Builders' Forum
Topic: Fiberglass & epoxy application during very hot weather?
Replies: 8
Views: 1622

Re: Fiberglass & epoxy application during very hot weather?

Control sweat! Wear absorbent clothing with long sleeves. Maybe a wrist band and head band to prevent sweat dripping on to the uncured resin or the glass before resin is applied. Sweat will make a milky blotch.
by sedges
Fri Jul 06, 2018 9:51 pm
Forum: Builders' Forum
Topic: Help with Oil-canning
Replies: 4
Views: 1500

Re: Help with Oil-canning

I disagree with above. To stiffen a layup you need to add to the INSIDE. It can be just a diamond shaped piece that covers the flattest part of the hull. I am curious about the strip thickness you used. It seems to me your fours layer of 3.25oz should have made a hull stiff enough to not oilcan, at ...
by sedges
Thu Jun 21, 2018 3:54 pm
Forum: Builders' Forum
Topic: Ash bottoms for tough river?
Replies: 9
Views: 1851

Re: Ash bottoms for tough river?

I have to agree with all of the above and add this. Kevlar inside, glass outside. If you are adding layers to the bottom, inside or out, make sure you stagger the edges of the layers by several inches. Laminates often fail at an abrupt transition in stiffness. Spreading out that transition is always...
by sedges
Sun Jun 17, 2018 7:08 pm
Forum: Builders' Forum
Topic: Advice needed - Fiberglass/Epoxy shaping and filling(?)
Replies: 13
Views: 1995

Re: Advice needed - Fiberglass/Epoxy shaping and filling(?)

Patrick! A tough situation to deal with at a time when more progress toward finishing would be desired. Your patience with solving the problem is good! I agree that you need to finish the flattening process. You are close. It does look like you have breached the glass already and those spots will ge...
by sedges
Mon Oct 02, 2017 5:16 pm
Forum: Builders' Forum
Topic: What's This ? is it amine blush?
Replies: 10
Views: 2533

one more thought on this

Early on in my boat building experience I re-used mixing containers as I was glassing. The mixed resin that was left coating the sides and bottom of the container seemed to mix in fine with the new resin. The problems began appearing as I squeegeed the excess resin out of the cloth. Patches of resin...