Jump to content
Maestronet Forums

First Coating on Violin Plates


pt3
 Share

Recommended Posts

I am making an experiment on varnishing. I made the varnish according to Marciana Recipe. The steps for the first coating is as follows:

1) Sun tanning

2) Applying thin varnish diluted with turpentine about 1:5 by volume, light brown in colour

3) Sun tanning

The result is shown in the attached photo. I am quite satisfied with its dichroic effect. The wood is from Northeast China, veery very cheap.

I don't know whether it is detrimental to the acoustic properties of the plate. Of course, the thin varnish was totally absorbed by the wood.

Mr. Don Noon:

Could you tell me what resin in turpentine do you use for this purpose? Thanks!

post-30878-0-73088000-1309648186_thumb.jpg

Link to comment
Share on other sites

Mr. Don Noon:

Could you tell me what resin in turpentine do you use for this purpose? Thanks!

Congo copal.

FWIW, Sam Zygmuntowicz told me he uses no oil in the first coat or two that goes on the wood. Greg Alf's method (at least, what he demonstrated at a varnish workshop) uses a very thick, short oil varnish thickened even further by adding pumice, and rubbing onto the wood.

I haven't tested everything, but for practical (drying time) and potential acoustic effects, I see no reason to use oil-containing varnish directly on the wood, except possibly extremely dilute for color (a la Darnton) or extremely thick (a la Alf).

Link to comment
Share on other sites

Congo copal.

FWIW, Sam Zygmuntowicz told me he uses no oil in the first coat or two that goes on the wood. Greg Alf's method (at least, what he demonstrated at a varnish workshop) uses a very thick, short oil varnish thickened even further by adding pumice, and rubbing onto the wood.

I haven't tested everything, but for practical (drying time) and potential acoustic effects, I see no reason to use oil-containing varnish directly on the wood, except possibly extremely dilute for color (a la Darnton) or extremely thick (a la Alf).

Could you tell me the concentration of copal in its turpentine solution (e.g., how many grams of copal in 100 cc turpentine) you use as a sealer?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    No registered users viewing this page.



×
×
  • Create New...