Crack in soundboard - FRETS.NET2024-03-29T13:37:11Zhttp://fretsnet.ning.com/forum/topics/crack-in-soundboard?commentId=2177249%3AComment%3A6669&feed=yes&xn_auth=nohey ...hope this helps..
i've…tag:fretsnet.ning.com,2008-12-12:2177249:Comment:67052008-12-12T02:07:48.348ZNick Anthonyhttp://fretsnet.ning.com/profile/NickAnthony
hey ...hope this helps..<br />
i've been doing guitar repairs my whole life and have never been pleased with the results gained from cleating cracks (cross grain patches). depending on the finish used (laquer or a catalyzed poly etc) i'd probably use a CA glue. CA glues are not very forgiving but are an awesome tool when you get used to them. i use them even on laquer finishes..with a couple of different techniques you can even spot finish over them without getting blend lines. wick thin ca glue into…
hey ...hope this helps..<br />
i've been doing guitar repairs my whole life and have never been pleased with the results gained from cleating cracks (cross grain patches). depending on the finish used (laquer or a catalyzed poly etc) i'd probably use a CA glue. CA glues are not very forgiving but are an awesome tool when you get used to them. i use them even on laquer finishes..with a couple of different techniques you can even spot finish over them without getting blend lines. wick thin ca glue into the crack and kick it w/ an accelerator. using a scraper or razor blade w/ a burnished edge clean up the glue being as careful as possible..scuff w/ 220 and shoot a thin coat or two of shellac on the scuffed area...let that cure for 2 days at least...then w/ the finish you origionally used...the shellac covers the ca glue and you will show no blend lines.<br />
<br />
good luck<br />
nick Steve
Thanks for the input. T…tag:fretsnet.ning.com,2008-12-11:2177249:Comment:66692008-12-11T03:55:22.188ZRon Daveshttp://fretsnet.ning.com/profile/RonDaves
Steve<br />
Thanks for the input. The glue I am using is white luthier's glue from LMI. It is a PV glue, according to the label, I added the "A" on the end, perhaps incorrectly. I have ordered hide glue and am waiting for a delivery. I like the idea of magnets. They must be quite powerful. I have a couple magnets that I use for welding. I will see if I can clean them up and get them to work. I have a cross-grain splint prepared and will be gluing it in as soon as I get the Hide glue. I plan on…
Steve<br />
Thanks for the input. The glue I am using is white luthier's glue from LMI. It is a PV glue, according to the label, I added the "A" on the end, perhaps incorrectly. I have ordered hide glue and am waiting for a delivery. I like the idea of magnets. They must be quite powerful. I have a couple magnets that I use for welding. I will see if I can clean them up and get them to work. I have a cross-grain splint prepared and will be gluing it in as soon as I get the Hide glue. I plan on squeezing some hide glue into the crack, then putting the splint in place. One person I talked to recommended putting splints across the crack at 3/4-inch intervals instead of a solid piece. What do you think? This splint is about .085 thousandths thick. What are your thoughts on that? Ron,
I used to build guitars…tag:fretsnet.ning.com,2008-12-11:2177249:Comment:66672008-12-11T03:36:20.325ZStevehttp://fretsnet.ning.com/profile/Steve
Ron,<br />
<br />
I used to build guitars in Albuquerque (low humidity) before moving to Austin (high humidity). I had a crack develop on an Albuquerque guitar in the lower bout but the fix is the same. If there is no gap in the crack then brace it from underneath with a small patch. Remember to orient the patch 90 degress to the grain of the soundboard. Use hide glue or white luthiers glue (I use the latter). I am not familiar with PVA. Is it heat or steam sensitive? Souble in alcohol or some other…
Ron,<br />
<br />
I used to build guitars in Albuquerque (low humidity) before moving to Austin (high humidity). I had a crack develop on an Albuquerque guitar in the lower bout but the fix is the same. If there is no gap in the crack then brace it from underneath with a small patch. Remember to orient the patch 90 degress to the grain of the soundboard. Use hide glue or white luthiers glue (I use the latter). I am not familiar with PVA. Is it heat or steam sensitive? Souble in alcohol or some other solvent? Try to clean up with those then use the glues I recommended, if possible. If you have magnets (neodymium are best) use those for the clamping as they are easier to position. Best of luck.<br />
<br />
Steve