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warped unjoined back plates
Posted: Sat Mar 28, 2015 6:14 pm
by jrc127
I have a nice set of ribbon African Mahog. that I stored flat in my shop. The unjoined plates have slightly warped. I'm sure I can flatten them but want to make sure of the procedure. Like so?: wet them on the concave side (inside curve) and put some weight on them. Will that work?
Re: warped unjoined back plates
Posted: Sat Mar 28, 2015 6:28 pm
by tippie53
DO NOT ADD WATER
lay them with the cup side down. If you use a cloths iron on med heat you can iron the up side and get them flat then thickness them Keep them flipped for a few weeks then brace. Even a slight warp will work out once braced.
Re: warped unjoined back plates
Posted: Sat Mar 28, 2015 10:53 pm
by jrc127
Thanks, John. Will do.
Re: warped unjoined back plates
Posted: Fri Apr 03, 2015 3:41 am
by ColestineGuitar
Hah! I shall do the same with the "potato chipped" indian rosewood I bought. I was gonna get them wet, then put them under weights on the top of a cooling wood stove, once it had cooled to less than 300 degrees F.
(thanks, John)
Re: warped unjoined back plates
Posted: Fri Apr 03, 2015 6:46 am
by tippie53
it they are real bad you can use a cloths iron and iron them just before gluing braces. I have used that trick many times. I now have a heat blanket and treat them with med heat for about 20 min at 225 F
Re: warped unjoined back plates
Posted: Fri Apr 03, 2015 9:08 am
by Ben-Had
tippie53 wrote:it they are real bad you can use a cloths iron and iron them just before gluing braces. I have used that trick many times. I now have a heat blanket and treat them with med heat for about 20 min at 225 F
What size blanket are you using for that?
Re: warped unjoined back plates
Posted: Fri Apr 03, 2015 10:00 am
by tippie53
I have 18 by 24 in blankets made for this