Jump to content

problem of oil varnish


shsu
 Share

Recommended Posts

This happens a few times on spruce tops.

I found the oil varnish uneven, I can feel with my fingers along the grain interfaces that the finish seems to sink along the grain lines. I have to spend lot of time sanding betwwen each coat and polishing, rubbing off of the final coat.

What is the cause? Solvant in my oil varnish? :)

Here is the sequence of my varnishing.

scrape, water-base stain, wood sealing, color varnish, clear varnish.

Sanding after sealing between steps.

Link to comment
Share on other sites

Maybe it happens because your spruce wasn't smooth to begin with and you are filling the rough surface with varnish? Oil varnish isn't a very good filler. If you want a wood filler talk to guitar builders, they really try for a perfectly smooth factory car type of look. The traditional look for violins is to leave the cordory surface visible. Why shouldn't a handmade violin look handmade?

Link to comment
Share on other sites

Your finishing procedure will produce a corduroy finish because you use a water based stain after scraping.

Try U.V. light instead of water stain and you'll get something less cordouroy.

Oil varnish does not make the wood swell, but alcohol varnish does, a little bit.

For severe swelling try viagra and for an antidote try Camomile tea.

Personally, I like a subtle finish that shows slightly through the varnish.

Link to comment
Share on other sites

This happens a few times on spruce tops.

I found the oil varnish uneven, I can feel with my fingers along the grain interfaces that the finish seems to sink along the grain lines. I have to spend lot of time sanding betwwen each coat and polishing, rubbing off of the final coat.

What is the cause? Solvant in my oil varnish? :)

Here is the sequence of my varnishing.

scrape, water-base stain, wood sealing, color varnish, clear varnish.

Sanding after sealing between steps.

The water based stain will swell the wood somewhat. Solvent in the varnish will thin it creating a thinner film.... However some oil varnishes have less ability to "stand up" in film thickness. A varnish with more body...not necessarily less solvent will fill the spruce more without completely hiding the geography of the grain.

Joe

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...