SoCal Jet Boats

Tech Talk => Gelcoat / Paint / Fireberglass Repair => Topic started by: bbfsouthwind on July 09, 2014, 05:46:01 PM

Title: Sanding balsa floors
Post by: bbfsouthwind on July 09, 2014, 05:46:01 PM
Ok, I have gotten one section of floor glassed down. Everything went well and is very solid. I was instructed to lay the balsa with the scrim side up and sand after it's set. What grit paper do you sand the scrim off with and is a 6" da suitable? Should I work my way up in sandpaper grit after the scrim is gone?
Thanks for any help!


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Title: Re: Sanding balsa floors
Post by: jyeager on July 09, 2014, 06:28:23 PM
Ok, I have gotten one section of floor glassed down. Everything went well and is very solid. I was instructed to lay the balsa with the scrim side up and sand after it's set. What grit paper do you sand the scrim off with and is a 6" da suitable? Should I work my way up in sandpaper grit after the scrim is gone?
Thanks for any help!


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ive always done 60 grit, 120 would be fine too. you want some scuffed up surface that the new glass will hold on too.
Title: Re: Sanding balsa floors
Post by: bbfsouthwind on July 09, 2014, 06:30:50 PM
Ok, I have some 80 here. How many layers of cloth do you use on top?
Title: Re: Sanding balsa floors
Post by: jyeager on July 09, 2014, 06:41:04 PM
Ok, I have some 80 here. How many layers of cloth do you use on top?

80 is fine. i would do 2 alternating layers of 10 oz cloth and 2 oz mat. so 2 of the 10 oz and 2 of the 2 oz
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