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Author Topic:   Varnish Stains on fiberglass

Garyelrod posted 07-10-2001 01:35 PM ET (US)
Has anyone had to remove varnish from fiberglass. The previous owner of the '73 Whaler I bought had varnished ( I guess it's varnish)the mahogany while still on the boat. Needless to say, there are brown stains inside on the fiberglass. I have just refinished the mahogany and I would like to remove these stains. I have tried acetone, it does not work. Also, as far as refinishing mahogany, I found from a previous posting and reply, use 30% penetrol as a thinner for the early coats. It goes on smooth and you have less brush drag. Foam brushes are definitely the way to go.
Thanks in advance for replies.
Gary Elrod
Bigshot posted 07-10-2001 02:01 PM ET (US)
Try E-Z off ovencleaner, lemon scent is nice. Takes off about anything but won't hurt the gel.
Outrage18 posted 07-10-2001 03:47 PM ET (US)
What about removing old sloppy epoxy drips?
What can I use for that?
Bigshot posted 07-10-2001 04:06 PM ET (US)
razor blade as close as you can then try EZ off or wet sand it. I doubt acetone but try it.
lhg posted 07-10-2001 05:44 PM ET (US)
Wet sanding will work to get rid of varnish stains also, as long as it's not in the non-skid. Begin with #2000. If that doesn't cut it, go down to #1500, then #1000, then #600 etc. Then you will have to sand your way back up the numbers.
Bigshot posted 07-11-2001 11:27 AM ET (US)
I like 1000 grit, then rubbing compund, then polishing compound, then 2 coats of wax. Problem is that spot will look BRAND new and you wil want to do your entire boat.

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Author	Topic: Varnish Stains on fiberglass
Garyelrod	posted 07-10-2001 01:35 PM ET (US) Has anyone had to remove varnish from fiberglass. The previous owner of the '73 Whaler I bought had varnished ( I guess it's varnish)the mahogany while still on the boat. Needless to say, there are brown stains inside on the fiberglass. I have just refinished the mahogany and I would like to remove these stains. I have tried acetone, it does not work. Also, as far as refinishing mahogany, I found from a previous posting and reply, use 30% penetrol as a thinner for the early coats. It goes on smooth and you have less brush drag. Foam brushes are definitely the way to go. Thanks in advance for replies. Gary Elrod
Bigshot	posted 07-10-2001 02:01 PM ET (US) Try E-Z off ovencleaner, lemon scent is nice. Takes off about anything but won't hurt the gel.
Outrage18	posted 07-10-2001 03:47 PM ET (US) What about removing old sloppy epoxy drips? What can I use for that?
Bigshot	posted 07-10-2001 04:06 PM ET (US) razor blade as close as you can then try EZ off or wet sand it. I doubt acetone but try it.
lhg	posted 07-10-2001 05:44 PM ET (US) Wet sanding will work to get rid of varnish stains also, as long as it's not in the non-skid. Begin with #2000. If that doesn't cut it, go down to #1500, then #1000, then #600 etc. Then you will have to sand your way back up the numbers.
Bigshot	posted 07-11-2001 11:27 AM ET (US) I like 1000 grit, then rubbing compund, then polishing compound, then 2 coats of wax. Problem is that spot will look BRAND new and you wil want to do your entire boat.