Tape to protect hull from gel overspray - SailNet Community

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Old 07-01-2013
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Tape to protect hull from gel overspray

I'll be making a gelcoat repair to my hull using the preval sprayer and considering not using tape to protect the rest of hull from overspray. Using tape may leave a visible line between the repair and the rest of the boat even if I was able to feather the repair and turn the edge of the tape under itself, which seems like a good idea to lessen the chance of a hard line. Since I'll be using 320 grit sponge, 400 grit and then 600 grit on a block prior to 3M imperial compound after the gel completely cures, it would seem that any overspray would be removed from the surrounding area?? Plus the surrounding area would not be sanded before the gel was sprayed and thus would(should) be removed easily via the sanding and rubbing coupound.

One other question while I'm thinking about it. When using wax gel is a wipe down with acetone needed to remove the wax prior to sanding? I read somewhere that just sanding will be sufficient in removing it. This if after spraying and I know that an acetone wipedown(2 rag method) is needed prior to spraying.
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Old 07-01-2013
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Re: Tape to protect hull from gel overspray

I would protect all parts of the boat you do not want overspray on. Then create a rough template out of cardboard that you attach about an inch or two away from the area to be sprayed. This should allow some natural feathering of the overspray. Never spray on a windy day.

Sanding does not remove wax. Wipe-down before sanding.
Tim R.
Living aboard in Portland, Maine
1997 Caliber 40LRC

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