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Thread: Violin re-finishing - truoil ?
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12th April 2018, 10:37 AM #16Senior Member
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Thanks again Ian. I didn't intend to sand back as such, as Id be very close to the maple stain now on the violin. I will be going over it all carefully with a micomesh pad 500 grit to remove dust.
I think a potential for the long dry time issues could be that the "Application" instructions on the can state that if spraying, spray 2 or more coats thinned 20% with turps.
What is not stated clearly is the time between spray coats...except further on under "Drying Time", drying time is 6 hours before sanding, so you have to join the dots.
I went onto their web site and looked at the spec sheet and there it states 6hrs between coats.
It would be easy if you speed read the label, to lay on 2 coats in one hit, and then have to wait over a week for the bottom coat to dry with all those vapours trapped under the second coat.
I will report back.
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13th April 2018, 10:30 AM #17Senior Member
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Up date with photos:
Used a cut down rubber-backed sanding pad to wipe on un-thinned Sanding Sealer (SS)across the grain into some tear-outs still showing after first spray coat of SS.
Used the bowl sander pad, minus the arbour, to hand rub back remaining tear our areas going with the grain, using a cut-out 3" diameter piece of Velcro backed 400 grit 'paper'
After going over the whole body violin with 500 flex paper and 0000 steel wool, making sure no steel fibres remained, sprayed another coat of SS + maple stain , a little thinner than the 1st this morning. The colour is getting darker, so I might stop adding stain to the final coat of SS tomorrow.
The SS goes on gloss (when I took the photo)and dries matt, but the photo should indicate the final look of the thing.
Its begun to look like a violin...from a distance anyway !
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13th April 2018, 10:32 AM #18Senior Member
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And a good use for a microphone stand to help prevent sags on the top.
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17th April 2018, 05:28 PM #19Senior Member
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Hi again Ian and all,
Update : The sanding sealer mixed with prooftint maple went on well. I decided to try shellac as you originally suggested and found this Zinsser product on the web. Had a lot of trouble finding it but eventually did in a craft focused store only 10 minutes from home ! It is applied straight out of the can, and certainly doesn't need any further thinning. Even for spraying.
Tried hand wiping application but found with the violin's tricky shape, I either had some runs, or couldn't keep up with a wet edge. But I could see the potential, so sanded it back all over to get rid of runs etc, and experimented with the gravity fed spray gun on test pieces.
Ended up adding some more prooftint to the shellac, doing the sides and the back of the violin by spraying with low pressure (30psi) and a lower than usual fluid volume ratio to air.
I'm happy with the result and may do another coat after a few days and a 1500 micro mesh rub . As you suggested , leaving the the body top until last.
Here's a photo of the first spray coat, and the product.
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19th April 2018, 12:50 PM #20Senior Member
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Hi again, A violin playing friend likes the finish, but had a comment as follows.
"Could I tone down the orange/red tint, to a slightly more 'cool brown' (whatever that means!). lol.
What tint colour in the Prooftint range would you use to add judiciously to the next coat of shellac ?
Thanks,
Don
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19th April 2018, 02:28 PM #21
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20th April 2018, 11:58 AM #22SENIOR MEMBER
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20th April 2018, 02:36 PM #23
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21st April 2018, 11:05 AM #24Senior Member
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[QUOTE=truckjohn;2081981]Tobacco...
The problem is that you may have to do some "addition by subtraction"... As brown over orangey may still end up orangey..[/QUO
Oh. Of the Feast Watson colours in the link here , is 'oak' the closest to your 'tobacco' ?
Prooftint Traditional Stain | Spirit Based Stain, Retains Timber Grain
Any opinion of Ian's suggestion above too, of trying black ?
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22nd April 2018, 08:08 AM #25SENIOR MEMBER
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Test on scrap. Black tends to do weird things... Like make things grey...
I would get in contact with a violin supply place.... Here's an example of stuff you can get.. ColorTone Liquid Stains | stewmac.com
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