StewMac tools

Heat bending linings

Please put your pickup/wiring discussions in the Electronics section; and put discussions about repair issues, including fixing errors in new instruments, in the Repairs section.

Heat bending linings

Postby Craig Bumgarner » Tue Dec 13, 2016 11:12 am

Anyone have experience with heat bending linings. I use a 1/4" x 1/2" un-kirfed binding on my guitars. I've been laminating them out of 1/28" veneers but this is a bit tedious and uses lots of glue.
Craig Bumgarner
 
Posts: 357
Joined: Mon Jan 09, 2012 3:03 pm
Location: Drayden, Maryland

Re: Heat bending linings

Postby Brian Evans » Tue Dec 13, 2016 11:29 am

I've done it. It works best if you use three layers about .060" each. You can install the side braces of the same thickness material as the first layer, install the first layer between the braces and then install the next two layers over both, locks everything together. I've tried at .090" but had a lot of difficulty getting the bends to match the rim perfectly. If the bends don't match perfectly the kerf tends to pull the side out of true.
Brian Evans
 
Posts: 516
Joined: Sat Aug 30, 2014 8:26 am
Location: Tatamagouche, Nova Scotia

Re: Heat bending linings

Postby Craig Bumgarner » Tue Dec 13, 2016 11:32 am

Okay, yeah, I worry about whether I can keep them true enough. My guitars have some tight cutaways, worried about that too.
Craig Bumgarner
 
Posts: 357
Joined: Mon Jan 09, 2012 3:03 pm
Location: Drayden, Maryland

Re: Heat bending linings

Postby Rodger Knox » Tue Dec 13, 2016 12:02 pm

I use laminated kerfless linings, and I prefer oak. It bends easily, unless it's too thick, and 0.125" is too thick.
3 layers each 0.10" thick should work fine. I bend them first, and glue them up one layer at a time. The little metal binding clips in various sizes work really nicely to get everything nice and tight.
A man hears what he wants to hear, and disreguards the rest. Paul Simon
Rodger Knox
 
Posts: 484
Joined: Mon Jan 09, 2012 2:02 pm
Location: Baltimore, Maryland

Re: Heat bending linings

Postby Barry Daniels » Tue Dec 13, 2016 12:25 pm

I've bent basswood linings up to 1/4" thick but it put up a good struggle. Switching to kerfed linings was a relief. Another option is steam bending. I have done oak up to 5/16" thick but it has to be steamed for 30 minutes and then you have to bend it very quickly after taking it out of the steam box. Now I do heat bent and laminated bindings from 1/16" poplar veneer. Yeah, it's a lot of work but I think it is worth it.
MIMF Staff
Barry Daniels
 
Posts: 1722
Joined: Thu Jan 05, 2012 10:58 am
Location: Houston, Texas

Re: Heat bending linings

Postby Alan Carruth » Tue Dec 13, 2016 2:24 pm

I've heat bent willow, butternut, and cedro up to about 5mm thick, with only minor crushing problems at the waist. Since the crushes are on the gluing surface I figure they're probably not too much of an issue.

Bending liners for a guitar with a domed top or back can be a problem. The rise and fall of the level of the edge makes it hard to follow, particularly with a 15' radius or less. More flexible kerfed liners will twist to follow the sides to some extent, and you can also put them on in short sections. I make the liners tall, and when they're bent I'll clamp them in place dry and trace the profiled edge onto the liner. This gets trimmed off, and then the liner is trimmed to a uniform height all the way around. You might be surprised at how much you end up trimming off....
Alan Carruth
 
Posts: 743
Joined: Sun Jan 15, 2012 1:11 pm

Re: Heat bending linings

Postby Bill Raymond » Tue Dec 13, 2016 3:09 pm

I use 3 layers of 2mm basswood, glued up around the same form as I use for laminating the sides, then kerf where necessary to fit them in. My sides aren't contoured for a domed top or back, so that's no problem. I happened upon a lot of basswood venetian blind slats that, when planed to remove the finish, come out to ca. 2mm.
Bill Raymond
 
Posts: 303
Joined: Fri Jan 06, 2012 5:37 pm
Location: Red Bluff California


Return to Flat-Top Acoustic Guitars and Bass Guitars

Who is online

Users browsing this forum: Bing [Bot] and 1 guest

Your purchase from these sites helps support the MIMForum, but only if you start at the links below!!!
Amazon music     Amazon books     Amazon tools     Rockler tools     Office Depot    

The MIMF is a member-supported forum, please consider supporting us with a donation, thanks!
 • Book store • Tool store • Links •