Can I use a water based sanding sealer with an oil based polyurethane? Woodcraft said yes, buty I tried it and after applying the sanding sealer on a Lacewood jewelry box, the wood will not take the poly. Some spots it will, some spots it wont almost like what it looks like when there is a glue spot ( which ther isn’t ). Secondly what about dyes. I have some water based dyes I am getting ready to use on some Cherry, but am now concerned about using an oil based finish over that.
Thanks for any advice
Edited 6/20/2004 1:24 pm ET by MTBURTON
Replies
You didn't say how long you allowed the sealer to cure before you top-coated - and this can make a difference regardess of the top coat you select. More drying/curing time is almost always desirable.
That being said, I've achieved good results by applying a barrier coat of shellac before top-coating. Even "super-blonde" shellac will alter the color somewhat. I often use this characteristic to my advantage to "warm up" the appearance of projects, especially with walnut, that would otherwise look "cold" when top-coated with a WB product alone.
Good luck,
-Jazzdogg-
Whether you think you can, or you think you can't, you're right.
First, what do you mean by "the wood will not take the poly"?
Also, does the sanding sealer you used contain stearates. Many do and they can not be used under a poly finish.
Poly is a self sealing finish and sanding sealer is not required. Unless you confirm with the sanding sealer manufacturer and the poly manufacturer that the two are compatable, be very leery about mixing manufacturers of finish products.
There is no problem with using an oil based finish on top of a water based dye.
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