Jeff, I used penetrol on my M17 for a while several years ago. Still use it on the aluminum toe-rail and it does a good job of restoring the looks of that. I got away from it on the fiberglass after I wasn't satisfied with the results. Went with Poly Glow instead and have been very happy with that. Yes, you can fine sand the gel coat. I had to do that on CornDog to get her hull to an even consistent color. Everything else I tried left her blotchy. The gel coat was just faded too deep for the polishing compounds to do it. I started very carefully with 400 grit, making sure to not go too deep, then moved to 600 grit, and finally 1300 grit which gave it a nice consistent satin look. The Poly Glow then gave it the glossy shine. Penetrol may have worked fine after the sanding, but I didn't want to try it again since the previous treatments I'd done with it made the sanding such a nasty chore, clogging up the sandpaper pretty quickly. Larry On Mon, 25 Feb 2013 18:38:12 -0800 (PST) Jeff <northwave20@yahoo.com> writes:
I seem to remember reading an article about using penetrol on older chalky gelcoat. Is it possible to clean and/or fine sand the gel coat and apply penetrol to come up with a decent looking finish?
Jeff
Thanks Larry, I know gelcoats are pretty thick and I have had friends that did fine sanding and it looked great. I'll have to give Poly Glow a try. I have been thinking that there must be something that can seal the gelcoat after sanding and bring a shine. Polishing compounds and waxing never seem to last long and before you know it, the chalkiness is back. Jeff ________________________________ From: Larry E Yake <leyake@juno.com> To: northwave20@yahoo.com; montgomery_boats@mailman.xmission.com Sent: Monday, February 25, 2013 7:10 PM Subject: Re: M_Boats: Penetrol Jeff, I used penetrol on my M17 for a while several years ago. Still use it on the aluminum toe-rail and it does a good job of restoring the looks of that. I got away from it on the fiberglass after I wasn't satisfied with the results. Went with Poly Glow instead and have been very happy with that. Yes, you can fine sand the gel coat. I had to do that on CornDog to get her hull to an even consistent color. Everything else I tried left her blotchy. The gel coat was just faded too deep for the polishing compounds to do it. I started very carefully with 400 grit, making sure to not go too deep, then moved to 600 grit, and finally 1300 grit which gave it a nice consistent satin look. The Poly Glow then gave it the glossy shine. Penetrol may have worked fine after the sanding, but I didn't want to try it again since the previous treatments I'd done with it made the sanding such a nasty chore, clogging up the sandpaper pretty quickly. Larry On Mon, 25 Feb 2013 18:38:12 -0800 (PST) Jeff <northwave20@yahoo.com> writes:
I seem to remember reading an article about using penetrol on older chalky gelcoat. Is it possible to clean and/or fine sand the gel coat and apply penetrol to come up with a decent looking finish? Jeff
Jeff, keep us all posted on the process and final results. I am sure there are lots of interested M boaters who will follow this line. --- Larry (M-15 Old 189) -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of Jeff Sent: Tuesday, February 26, 2013 7:03 AM To: Larry E Yake; montgomery_boats@mailman.xmission.com Subject: Re: M_Boats: Penetrol Thanks Larry, I know gelcoats are pretty thick and I have had friends that did fine sanding and it looked great. I'll have to give Poly Glow a try. I have been thinking that there must be something that can seal the gelcoat after sanding and bring a shine. Polishing compounds and waxing never seem to last long and before you know it, the chalkiness is back. Jeff ________________________________ From: Larry E Yake <leyake@juno.com> To: northwave20@yahoo.com; montgomery_boats@mailman.xmission.com Sent: Monday, February 25, 2013 7:10 PM Subject: Re: M_Boats: Penetrol Jeff, I used penetrol on my M17 for a while several years ago. Still use it on the aluminum toe-rail and it does a good job of restoring the looks of that. I got away from it on the fiberglass after I wasn't satisfied with the results. Went with Poly Glow instead and have been very happy with that. Yes, you can fine sand the gel coat. I had to do that on CornDog to get her hull to an even consistent color. Everything else I tried left her blotchy. The gel coat was just faded too deep for the polishing compounds to do it. I started very carefully with 400 grit, making sure to not go too deep, then moved to 600 grit, and finally 1300 grit which gave it a nice consistent satin look. The Poly Glow then gave it the glossy shine. Penetrol may have worked fine after the sanding, but I didn't want to try it again since the previous treatments I'd done with it made the sanding such a nasty chore, clogging up the sandpaper pretty quickly. Larry On Mon, 25 Feb 2013 18:38:12 -0800 (PST) Jeff <northwave20@yahoo.com> writes:
I seem to remember reading an article about using penetrol on older chalky gelcoat. Is it possible to clean and/or fine sand the gel coat and apply penetrol to come up with a decent looking finish? Jeff
participants (3)
-
Hughston, Larry＠DGS -
Jeff -
Larry E Yake