Rather than but in on Bob’s thread about sanding walnut I will ask a new question about ‘stearated’ sandpaper mainly to Forestgirl. I vaguely remember reading something about it leaving something on the wood that interfered with the adhesion of any finish to the wood? Is that true?
Also does the label say if it does have the stuff on it?
What is the purpose of it?
Thankyou,
Ken
Replies
Ken,
I use it regularly and have never had an issue.
Cheers,
eddie
edit: the paper is a white colour and doesn't say stearated, but is sometimes sold as non-clogging. It's a common paper in smash repairers/respray shops.
Edited 2/5/2004 4:46:08 AM ET by eddie (aust)
Actually, it's zinc stearate. Zinc Stearate is a lubricant and releasing agent used to make the sandpaper clog less. I've never heard of any issues you describe because the melting point of zinc stearate is beyond most sanding operations.
Lee
Check, Most water based coatings tell you to stay away from stearate coated sandpaper. If there is a failure, it may be that some of the stearate has been left on the wood.
Jim
As for adhesion problems, I would be concerned only if using certain finishes.
Shellac; lacquer; traditional alkyd varnish; oil/varnish blend; I would expect no problems.
Some polyurethane varnish might (emphasis on might) pose a problem. I think much of the info on the can of finish is meant to indemnify the manufacturer in case the finish fails. Failure might be much less common than the manufacturer would suggest.
Hi Ken, sorry I didn't log in last night. I used to worry about using stearated paper, but after reading different posts and experimenting on my own, my mind is eased. I generally wipe down projects with Naptha or spirits after sanding, just to clean the dust off, and that should take care of any stearate residue also.
forestgirl Another proud member of the "I Rocked With ToolDoc Club" .... :>) you can take the girl out of the forest, but you can't take the forest out of the girl ;-)
Thanks to all for your help,
Ken
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