BWCA My 38 Spl. Modified build Boundary Waters Group Forum: Boat Builders and Repair
Chat Rooms (0 Chatting)  |  Search  |   Login/Join
* For the benefit of the community, commercial posting is not allowed.
Boundary Waters Quetico Forum
   Group Forum: Boat Builders and Repair
      My 38 Spl. Modified build     

Author

Text

1JimD
distinguished member(579)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
06/19/2023 09:05PM  
last Fall I started another 38 Spl build.
Here is a short build thread with mostly photos.
I'm a believer of a pic is worth a 1,000 words.
To start I had supplies to build another canoe, and the 38 is one of the best designs I have used.
Drawback ? I didn't locate my 38 Spl. strongback ( Forms spaced at 12 1/2")

I used another strongback with 12" centers, in stead.



The planks I cut the strips from varied in length, so all but a few courses in the football were spliced.
Bead and coving the strips helped a lot.
I used 3/16" thick strips for this build, instead of the traditional 1/4" thick strips.




A sighting stick is used to make sure stem forms are aligned. Old trick Bob Brown taught me.







More later
 
      Print Top Bottom Previous Next
Arcola
distinguished member (291)distinguished memberdistinguished memberdistinguished member
  
06/20/2023 04:38AM  
I need to build another boat!!
 
tumblehome
distinguished member(2815)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
06/20/2023 07:32AM  
Hey Man, thanks for keeping this sub-forum alive. We need more of this! Thanks.


I'm hoping to build another wood/canvas this winter. I really want to design my own solo canoe. So I have to build a form too. Not sure if I can pull it off. We'll see.
Tom
 
1JimD
distinguished member(579)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
06/22/2023 06:54PM  
Forms set, with a fishline for alignment.

My bead and cove set up. I run my strips Between the fence and the bit. First pass, and they are all uniform in width.
Making good strips really helps assembling a hull.

With short strips splicing between the forms is done with spring clamps and tape covered scraps to hold everything together. Bead and cove makes it easy to start another course right away.

My " Jimmie " clamps with 1/4" plastic tubing holds the strip, without damaging the coves.


I add the 1/4" tubing to the form blocks too, Zip ties work great to hold the tubing. No more picking things off the floor.

Here is a link to the clamps I make and use. You can make your own cheap.
Spring clamps
 
1JimD
distinguished member(579)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
07/05/2023 10:03PM  
Been busy, but have a few minutes.

The 3/16" thick strips went together good



I tilt my strongbacks, when stripping the football, and for sanding.




Once the hull is stripped, and the outside sanded ? It's glassing time. I always double layer the bottoms, on the outside, up to about the 3" waterline. Here I use a marker, clamped to a stick. I just do a series of dots about a foot apart. Then trim, dot to dot.



With the extra layer cut and removed, its time to glass the main layer.






I pre mark mix cups and add resin ahead of time. Then all I need do is add hardener, and mix. I don't like pumps They are inaccurate, When they Burp ? They are giving air instead of epoxy .


This was my first time using MAS epoxy. It's very clear handles the same as RAKE . Dries hard and sands good. I fear it's a little brittle compared to RAKA.



With the main layer wetted and cured just past Tacky ? I add the extra layer, and two Bias strips. The edges are feathered within 24 hrs, while the epoxy is still soft.





Again Tilting the strongback . It's time to sand. I sand the hull, while it is still on the forms.





After the outside is sanded, the hull is flipped, and then comes the inside. Never fun to sand ! But being minimal with strip gle when assembling ? Saves a LOT of work !
Time to glass.



With the inside glassed ? It's time for Flotation chambers. I build them into every canoe. They are simply worth the weight. Try and get into a swamped stripper. without them !












 
Arcola
distinguished member (291)distinguished memberdistinguished memberdistinguished member
  
07/06/2023 03:43AM  
What did you get for a final weight with the 3/16s strips? The boat looks awesome!!
 
tumblehome
distinguished member(2815)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
07/06/2023 07:10AM  
That’s a fine looking boat there Jim.

In regards to your epoxy, I haven’t used MAS but I did use RAKA one time many years ago and I found it too soft/ flexible. At least for me. There is a sweet spot for epoxy that is hard to find. You want an epoxy that is stiff but not too brittle.

Thanks for sharing.
Tom
 
1JimD
distinguished member(579)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
07/07/2023 08:07AM  
Arcola: "What did you get for a final weight with the 3/16s strips? The boat looks awesome!!"


Weight was 46#. So that includes a double layer up to the 3" water line, Flotation chambers, and my heavy duty seat.

First time with 3/16" strips, adding the bead and cove, makes it my way to go from now on.
 
1JimD
distinguished member(579)distinguished memberdistinguished memberdistinguished memberdistinguished member
  
07/07/2023 07:55PM  
tumblehome: "That’s a fine looking boat there Jim.


In regards to your epoxy, I haven’t used MAS but I did use RAKA one time many years ago and I found it too soft/ flexible. At least for me. There is a sweet spot for epoxy that is hard to find. You want an epoxy that is stiff but not too brittle.


Thanks for sharing.
Tom"


I've used RAKA 127 resin, and their 350 Non- blush hardener, for many years.

To me, it's not too soft. The cloth flexes, and I want my epoxy to also.

The MAS was clear, in my view, and sanded well.

I won't down it, but I did note a slight difference.

Both were quite satisfactory.

Jim
 
      Print Top Bottom Previous Next