Cleaning after sanding

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jbo_c
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Cleaning after sanding

Post by jbo_c »

What are y’all doing for cleaning the hull after sanding/fairing to prep for the next coat of compound?

Just blowing the area off with compressed air? Wipe down? With? Water? Acetone? Denatured alcohol(100%)?

For this question, my assumption is no blush.

Thanks.

Jbo

fallguy1000
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Re: Cleaning after sanding

Post by fallguy1000 »

I typically use compressed air. After compressed air; depends on next step.

For more laminating, I use a woodshop brush and hit air a second time if it looks dirty.

Before painting, I like to follow the above with a wipedown of the paint maker's recommended solvent.

Absent advice, I used denatured alcohol, but I stopped trusting it after my fisheye nightmares and went to Epifanes Fiberglass Prep Cleaner.
My boat build is here -------->

viewtopic.php?f=12&t=62495

fallguy1000
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Re: Cleaning after sanding

Post by fallguy1000 »

For more fairing compound; blast it with 100psi air or more or clean denatured alcohol absent air.
My boat build is here -------->

viewtopic.php?f=12&t=62495

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Jaysen
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Re: Cleaning after sanding

Post by Jaysen »

1. For the record, I'm stupid.
2. My method works but I assume it is wrong at some point.

Sand, water on rag, water on rag, acetone on rag, water on rag, acetone, water from hose with nozzle, drink a beer, next step.

If it's a paid job, then it is 99% likely an ester job to no water, just acetone and I have to sneak the beer. :)

I remind you of point #1.
My already completed 'Lil Bit'. A Martens Goosen V12 set up to sail me to the fishing holes.
Currently working on making a Helms 24 our coastal cruiser.
“Mark Twain/Samuel Clemens” wrote:Eat a live frog first thing in the morning and nothing worse will happen to you the rest of the day.
Jaysen wrote: Mon Apr 29, 2019 3:44 pm I tried to say something but God thought I was wrong and filled my mouth with saltwater. I kept my pie hole shut after that.

jbo_c
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Re: Cleaning after sanding

Post by jbo_c »

fallguy1000 wrote: Wed May 31, 2023 9:25 am I used denatured alcohol, but I stopped trusting it after my fisheye nightmares and went to Epifanes Fiberglass Prep Cleaner.
I’d forgotten about your fish-eye problem. Thanks for the reminder.

The next coat in this case will be more fairing compound.

Thanks for the replies.

Jbo

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