Jump to content

Sign in to follow this  
Noklin

Wood working question

Recommended Posts

I need to make up some rub rail material for my Core Sound 20. Rub rail will be painted.

If I do a 8 to 1 scarf in material that is 1.5 inches wide and 0.75 inches thick, I end up with a joint 1.5" X 6" or 9 sq inches of glue area.

If I do a 8 to 1 joint in the same material but cut across the face of the material, I end up with a joint 12" X 0.75" or 9 sq inches of glue area.

One upside is that the second joint is easier since I can clamp the two pieces together, overlapped by the length of the cut and cut both at once. The two pieces with be a perfect match to each other. Down side is that I lose a foot of length and the joint is visibly much longer.

I may not be using the correct terms here but hopefully you can understand the questions:

Since they have the same glue area but one joint is across the face and the other is along the edge, which is stronger and by how much?

Will they both take the same bend?

Share this post


Link to post
Share on other sites

Well, if you're going to paint it, I don't think you have to worry about appearance as much.  So do whichever is the easiest to do.

An epoxy glue joint is usually stronger than the wood itself, and I suspect either one would be strong enough for a rubrail.  You may get problems with breakage depending on the grain of the wood, but that can happen at any point.  I did have a scarf joint give way when bending the wood ... it sounded like a rifle shot!

Share this post


Link to post
Share on other sites

You may find it much easier to forget the scarf joint and just but sections together with something like a 45 degree cut.

Use something like 5200, 4200, or even epoxy to make a nice fill in the joint.  Double screw the pieces close to the joint.

Gary

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  


Supporting Members

Don't see ads and make messing-about.com possible! Become a Supporting Member - only $12 for the next year. Pay by PayPal or credit card.




×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.