Most of the UV blockers are not safe on most plastics. That's a generalization. YMMV.
We had UV blockers made from Sunbrella. 😀 Jim Watts Paradigm Shift C&C 35 Mk III Victoria, BC On 12 May 2017 at 10:29, Danny Haughey via CnC-List <cnc-list@cnc-list.com> wrote: > What do you do to protect thenewly polished surface from further sun and > UV damage. I'm thinking of adding a UV blocking film > > On 5/12/2017 12:27 PM, Jim Watts via CnC-List wrote: > > Nope, it is a surface treatment only. Deep crazing won't be affected. > > Novus #2 is specifically designed for acrylics and polycarbonates and > costs much less than the proprietary "headlight polishes". I use it > regularly to remove surface scratching and hazing from portlights and Lexan > dodger windows. > > If you have deeper scratches, you can use Novus #3, but if you use it too > hard you can create "lensing" on the plastic. > > Jim Watts > Paradigm Shift > C&C 35 Mk III > Victoria, BC > > On 12 May 2017 at 08:24, Harvey Barth via CnC-List <cnc-list@cnc-list.com> > wrote: > >> Will this process work to remove the crazing and small cracks that appear >> on older hatches? >> Harvey >> >> Sent from my iPhone >> >> On May 12, 2017, at 9:35 AM, Larry via CnC-List <cnc-list@cnc-list.com> >> wrote: >> >> Bruce >> >> You are doing it correctly. I have worked with “Plexiglass” since the >> early 70’s. However you only want to use the least grit paper to get the >> scratches out, so as to remove the minimum amount of material. I usually >> start with 1000 or 800 grit to determine if the scratches will come out. I >> then use 1200, 1500, 2000, 2500, 3000, 4000, and 5000 grit before moving on >> to polishing. Then you want to use a cloth that is safe for eyeglasses. I >> have done this many times on motorcycle windscreens and aircraft >> windscreens. I did it ones on my boat. Now I just take plexiglass polish >> three times a year to it. >> >> Good luck >> >> >> >> *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com >> <cnc-list-boun...@cnc-list.com>] *On Behalf Of *Bruce Whitmore via >> CnC-List >> *Sent:* Thursday, May 11, 2017 7:01 PM >> *To:* C&C List >> *Cc:* Bruce Whitmore >> *Subject:* Stus-List Fogged, Scratched Plexiglass - Good home test, now >> to try it on our companionway hatches... >> >> >> >> Hello all, >> >> >> >> Our 37/40+ has tinted plexiglass sliding companionway hatches that look >> fogged and lightly scratched all over from years of sun. After reading >> here and other places about potential ways of curing the issue, I ran a >> test here at home. I have a Ryobi Corner Cat, and grabbed a piece of scrap >> plexiglass. Starting with 360 wet/dry sandpaper, I wet sanded the nice new >> piece of plexi until it looked like $#!+. Then followed with 600, 1200 and >> 2000, then went to buffing compound, and finally to McGuire's polish for >> headlights. >> >> >> >> Sure enough, the piece of plexiglass came out really nice & clear. >> >> >> >> So, I think I'll try it on the sliding hatchboards unless someone here >> cautions me otherwise. >> >> >> >> What say you wise folks? >> >> >> >> Bruce Whitmore >> >> (847) 404-5092 (mobile) >> bwhitm...@sbcglobal.net >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> >> _______________________________________________ >> >> This list is supported by the generous donations of our members. If you >> wish to make a contribution to offset our costs, please go to: >> https://www.paypal.me/stumurray >> >> All Contributions are greatly appreciated! >> >> > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you wish > to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
