BBIII Build Sheer Clamp Question

David Wheeler

David Wheeler

Member
Gents:

I finally got the hull finished and turned her back over to start work on the top. Having trouble finding time to work on her for the past couple of months but making progress a little bit at a time. I have a question. My mahogany boards are a little short of making the full sheer length. Can I successfully scarf them to make the sheer clamp? I read somewhere that this is not recommended, but wonder if anyone here has tried it and had any experience with it good or bad. If you would try it where would you splice the joint? I want to get started on this part but don't have a local source of mahogany and can't find any white oak of proper length. Any other recommendations on an acceptable lumber for this application that I might find locally in Kentucky. Could you use Douglas fir for the sheer?
Thanks in advance for any suggestions.

DW
View attachment Painted Hull.jpg
 
David,
good doug fir was used on a lot of boats.
You can scarf the mahogany as well. Easy to do like the plywood. Cut then sand and then glue with epoxy. The scarf should be at least 10 to 1 and more is better. Put it in an area of the least bend for the part.

Nice work so far.
 
Dave,
Doug Fir works fine for sheer. Believe it is even listed as an alternative on Devlin's list of materials.
-Bill
 
David,

Yes, you can scarf your sheer clamp. I used ash for my sheer clamp and had it all ripped to size and ready to go. Started at the bow with my clamps and when I got to the stern I realized I was about 18" short - still can't figure out how that happened. I scarfed an extra piece onto each sheer clamp and everything was fine. Try to put it in a straighter section of the sheer - like near the back end.
 
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