scarf joints
02-28-2006 | 10:37 PM
#1
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From: Winston-Salem,
NC
scarf joints
I'm in the the process of building my first giant scale. Question: The plans show how to make a scarf joint out of 3/8" spruce, using CA. To me, the CA won't hold at all, end grain to end grain. Perhaps I should us a different glue?
03-01-2006 | 11:30 AM
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From: Arvada,
CO
RE: scarf joints
As long as your joint is greater than (or would that be less than?) 45 degrees, you're not really joining end grain. When making scarf joints I try to get them about 30 degrees. Medium CA should be fine. Wood glue like Tightbond works well too.
03-01-2006 | 03:28 PM
#5
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RE: scarf joints
If you must use CA on hardwoods like Spruce or Pine, first lightly dust the joint with baking soda (like used in the kitchen). Most hardwoods are slightly acidic and CA's do not work well with acid based material. The soda neutralizes the acid and lets the CA do its job.
03-02-2006 | 12:43 AM
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From: Arvada,
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RE: scarf joints
ORIGINAL: Rodney
If you must use CA on hardwoods like Spruce or Pine, first lightly dust the joint with baking soda (like used in the kitchen). Most hardwoods are slightly acidic and CA's do not work well with acid based material. The soda neutralizes the acid and lets the CA do its job.
If you must use CA on hardwoods like Spruce or Pine, first lightly dust the joint with baking soda (like used in the kitchen). Most hardwoods are slightly acidic and CA's do not work well with acid based material. The soda neutralizes the acid and lets the CA do its job.
03-02-2006 | 04:39 PM
#7
RE: scarf joints
I've always used titebond on a hardwood scarf joint. I'll have to give the CA a shot. Rule of thumb for a scarf joint is it should be at least 5X the thickness ,so if your joinong a 1/4 piece your angle should be 1 1/4 inches long.
