| Official Luthiers Forum! http://www.luthiersforum.com/forum/ |
|
| Mineral deposits http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=21993 |
Page 1 of 1 |
| Author: | Brock Poling [ Sat Apr 18, 2009 10:50 am ] |
| Post subject: | Mineral deposits |
Has anyone found a way to eliminate the white mineral deposit in some rosewoods? I would rather not resort to stains, and there are sometimes WAY WAY to many (and too small) to mark them with a sharpie or pick them out with an exacto. I am sure I am not the only person to experience this and just wondered if anyone found a magic bullet for dealing with this. |
|
| Author: | muthrs [ Sat Apr 18, 2009 3:19 pm ] |
| Post subject: | Re: Mineral deposits |
Hi Brock, I had this happen once with Mad Rose and tried to find a good solution to the problem. Wound up spending forever picking it all out. If I ever get another set with mineral deposits, I would send it back immediately. Sorry I couldn't be more help. |
|
| Author: | wbergman [ Sat Apr 18, 2009 5:49 pm ] |
| Post subject: | Re: Mineral deposits |
Sometimes, the deposits are white sap, and come out with water. The standard factory treatment for minerals that I have heard about is muriatic acid, which I would rather not handle. |
|
| Author: | John Mayes [ Sat Apr 18, 2009 6:03 pm ] |
| Post subject: | Re: Mineral deposits |
sometimes you can hit it with a thin coat of MEK and they lessen, but might not totally be gone. |
|
| Author: | bluescreek [ Sat Apr 18, 2009 6:23 pm ] |
| Post subject: | Re: Mineral deposits |
It is a fact of life with wood. I have used mineral spirits , naphtha , acetone , water , sometimes it comes out , sometimes it doesn't . I use a dark filler and that covers it up john |
|
| Author: | John Lewis [ Sat Apr 18, 2009 7:01 pm ] |
| Post subject: | Re: Mineral deposits |
Brock- I know you don't want to use stains but this is the only page I know of that shows how they personally get rid of mineral stains in rosewood - http://www.alliedlutherie.com/makeover.htm |
|
| Author: | Martin Turner [ Sun Apr 19, 2009 12:48 am ] |
| Post subject: | Re: Mineral deposits |
Ive got a classical made with IRW opp grade B and S set and theres a fair bit of silica deposits happening. I pumice grain fill so the plan is to let bleed out of colour from the IRW to darken up the deposits. Will post up results when I get the job done. |
|
| Author: | Brock Poling [ Sun Apr 19, 2009 4:16 pm ] |
| Post subject: | Re: Mineral deposits |
wbergman wrote: Sometimes, the deposits are white sap, and come out with water. The standard factory treatment for minerals that I have heard about is muriatic acid, which I would rather not handle. interesting, is that just wipe it on, wipe it off? I have to admit that after taking a look at that allied page I am not so dead set against the stain, but on most of the sets I have they are so nice to start with I hate to cover up any of their natural beauty with stain. But they sure made that low end Indian Rosewood look good. |
|
| Author: | wbergman [ Mon Apr 20, 2009 6:50 am ] |
| Post subject: | Re: Mineral deposits |
The examples that were white sap took some elbow grease with a wet rag. I first realized that some of these white spots are sap when I had a teak board resawn for furnature. After leaning against the wall for weeks, sap started to swell out of some of the pores. |
|
| Author: | Dave Fifield [ Tue Apr 21, 2009 3:44 am ] |
| Post subject: | Re: Mineral deposits |
Isn't muriatic acid just watered-down bleach? I used to use the stuff years ago in my pool (until they came out with chlorine tabs). Dave F. |
|
| Author: | woody b [ Tue Apr 21, 2009 6:04 am ] |
| Post subject: | Re: Mineral deposits |
Dave Fifield wrote: Isn't muriatic acid just watered-down bleach? I used to use the stuff years ago in my pool (until they came out with chlorine tabs). Dave F. No. Muriatic(also muratic) acid is actually hydrocloric acid. My Dad is a (retired) building contractor. When I was a kid I used muratic acid to wash brick with. It's allot stronger than bleach. A few ounces in five gallons of water would eat the mortar stains right off a brick wall. I don't know if the same strength is available today, that was 30+ years ago. I'd guess it's pretty diluted to use in a pool. I'll ask my Dad if the same stuff is still available, and try some on some scrap. I've got some Rosewood with ALLOT of mineral stains I use for neck laminations. The muriatic acid I used years ago was pretty bad stuff, requiring rubber gloves, safety glasses ect. |
|
| Author: | wbergman [ Tue Apr 21, 2009 6:19 am ] |
| Post subject: | Re: Mineral deposits |
You can probably get muriatic acid in a hardware store. |
|
| Page 1 of 1 | All times are UTC - 5 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|