I agree with you that rubbing compound or even better polishing compound should be used for the finishning touch. But it would take quite a bit of rubbing with just a compound alone to remove any kind of scratches other than some swirl marks from the sanding.
I actually have one of the acrylic scratch remover kits, forget which brand. It included a few grits of wet/dry paper and some sort of compound for the final rub out. It seem to me these components, or even better ones, could be acquired from a cheaper source locally.
The conversion chart is interesting in that 1200 grit paper = 9 microns and and the finest 12000 micro mesh = 2 micons. So it may require a finer paper (3600grit?) or mesh to get the very smooth glossy finish. Various mesh grits should also be available at any auto paint supply store. I also saw some mesh sanding sheets avaliable at Mclendons Hardware although I dont remember if they had anything finer than 1200 grit.
Back when I had to sand paint drips and runs out of the clear coat on some freshly painted cars I used fine grit (1800/2400) wet/dry sandpaper and then followed that effort with a cloth coated with polishing compound. This would result in a very smooth glossy finish.
From: <carrera206@comcast.net> Reply-To: gsas-member@thekrib.com To: <gsas-member@thekrib.com> Subject: Re: Acylic tank scratches and spot algae removal Date: Wed, 24 Mar 2004 15:51:46 -0800 Maybe, but to do a polishing without using any rubbing compound, I ended up having to use the finest micro-mesh grit size avail 12000 (this is not US standard grit measurement BTW). A conversion chart is available below: http://www.sisweb.com/micromesh/conversion.htm The acrylic needs to be especially smooth else it will show up as haze and the micro-mesh paper has a special backing that allows the abrasive to "give" a bit. Alfred Shiga ----- Original Message ----- From: "Paul Winchester" <bravo454@hotmail.com> To: <gsas-member@thekrib.com> Sent: Wednesday, March 24, 2004 12:51 PM Subject: RE: Acylic tank scratches and spot algae removal > If you want some really fine grit sandpaper go to an auto body supply store > or auto paint shop. >> They normally carry wet/dry sandpaper up through 2400 grit which nearly as> smooth as paper. > > I would think 1200 or 1800 should be fine enough to hide any sandpaper > marks. > > Paul > > > >From: <carrera206@comcast.net> > >Reply-To: gsas-member@thekrib.com > >To: <gsas-member@thekrib.com> > >Subject: Acylic tank scratches and spot algae removal > >Date: Wed, 24 Mar 2004 11:53:23 -0800 > > > >Now I have a question, does anyone have a good solution for removing green > >spot algae from a very deep tank? > > > >My tank is 240 gals or so, 72x24x30 and sits on a 36" high stand and it is> >very difficult to remove the spot algae that grows near the gravel as my > >magnetic cleaner will tend to want to pick up the gravel and long handled> >scrapers have never worked well for me. > > > >Is there any other solution that anyone have used? I want to keep the fish > >in place during the procedure. > > > >RE: Acrylic Scratch Removal > > > >The links below should give everyone a start at figuring out how to polish > >/> >remove scratches from acrylic aquariums. One can also look at the various > >products available for removing scratches, haze and crazing from acrylic> >aircraft windows and motorcycle fairings. > > > >Here is the method that I used on my 240 gal tank. > >> >In summary, think of the scratches as grooves in the acrylic that need to> >be > >smoothed out in order for them not to distort light and appear as > >scratches.> >Buffing out the scratches is not difficult to do. It just takes a bit of> >elbow grease. > > > >Start off with a grit rough enough to remove traces of the scratches > >without > >taking too long but not so rough that it gouges the heck out of your tank. > >Start sanding in a horizontal pattern and work your way through > >progressively smoother grits. > > > >Each time you switch grits you cross the previously sanded pattern (ex. > >horizontal pattern - back and forth, switch grits then sand in a > >vertical --up and down pattern, and so on) each time sanding until the > >previously sanded pattern cannot be seen anymore. As you get up to the > >finest grits the sanding pattern will be gradually replaced by clear > >acrylic. > >> >Do not use a circular pattern as the cris cross is easier to control and> >you> >could get optical distortions in the plastic otherwise. Remember you are> >actually removing the acrylic in order to get it smooth, so make sure that > >you judge if the scratch removal would result in weakening the tank too > >much. > >> >Finally use an acrylic polishing compound if necessary (depending on the> >grits that you have available) and if the tank is empty (and you are doing > >the tank interior. > > > >BTW, I bought my stuff through sisweb and I do not know about the other > >sites. The Micro-mesh products are definitely the way to go and I have also > >heard good things about the Novus line of plastic polishes. > > > >Good Luck, > > > >Alfred Shiga > > > >http://www.sisweb.com/micromesh/ > >http://www.sisweb.com/micromesh/reference/kr70_kit.htm > >http://www.sisweb.com/micromesh/acrylic_plastic_hand_kits.htm > >https://www.micro-surface.com/doc_library%5Ctechnical%5CClear_Seas_Acrylic_ Kit_Instructions.doc > >http://pages.restorersupplies.com/5943/InventoryPage/1316051/1.html > >http://www.ss-sci.com/micromesh.htm > >http://www.sculpt.com/catalog_98/abrasives/micromesh.htm > >http://www.marinedepot.com/aquarium_miscellaneous_scratch_removal_kit_penta ir_aquatics_rainbow-lifegard.asp > > > >----- Original Message ----- > >From: "Hess, Clay A" <clay.a.hess@boeing.com> > >To: <gsas-member@thekrib.com> > >Sent: Wednesday, March 24, 2004 11:03 AM > >Subject: RE: Acrylic tank scratches and neighbors with good intentions > > > > > > > Soooo, I have a similar problem with a tank of mine....had the Christmas> >tree fall on it this year. Left some nice scratches in it. What is the > >best product to remove the scratches and will it look as polished as the> >rest of the tank when I am done? I don't want to make a bad situation > >worse. > > > > > > -----Original Message----- > > > From: carrera206@comcast.net [mailto:carrera206@comcast.net] > > > Sent: Wednesday, March 24, 2004 8:35 AM > > > To: gsas-member@thekrib.com> > > Subject: Re: Acrylic tank scratches and neighbors with good intentions> > > > > >> > > You really want to use the micro -mesh stuff. Its quite expensive butit> >is the only product that can polish acrylic without removing the water or > >even taking out the fish. Plain or even wet/dry sandpaper is not usually> >fine enough to remove the scratches without having to buff the acrylic> >afterwards with polishing compound. You will need several different grits> >of > >the stuff and if you are doing it while the tank has occupants than you > >will > >need some of the finest grit stuff they have. > > > > > > > > > ----- Original Message ----- > > > From: "Sanford, Dave LHS-STAFF" <Sanfordd@issaquah.wednet.edu> > > > To: <gsas-member@thekrib.com> > > > Sent: Wednesday, March 24, 2004 7:35 AM> > > Subject: RE: Acrylic tank scratches and neighbors with good intentions> > > > > > > > > > I have experience in repair of a 180 gal tank. I bought it with > > > > gouges, scratches, haze etc. It was in bad shape. I worked on the > > > > entire front > > > inner> > > > and outer surface. It is possible to get it looking good again, and> > > remember > > > > that with water it will look much better than when dry. Good luck. The > > > > products at the website look good to me. What a bummer to have > > > > happened. dave > > > > ------------------ > > > > To unsubscribe from this list, please send mail to> > > > majordomo@thekrib.com with "Unsubscribe gsas-member" in the body of> > > > the message. Archives of this list can be found at > > > > http://lists.thekrib.com/gsas-member/ > > > > > > > > > > ------------------ > > > To unsubscribe from this list, please send mail to > >majordomo@thekrib.com > >with "Unsubscribe gsas-member" in the body of the message. Archives of > >this list can be found at http://lists.thekrib.com/gsas-member/ > > > > > > > > > ------------------ > > > To unsubscribe from this list, please send mail to > >majordomo@thekrib.com> > > with "Unsubscribe gsas-member" in the body of the message. Archivesof > > > this list can be found at http://lists.thekrib.com/gsas-member/ > > > > > > > ------------------ > > To unsubscribe from this list, please send mail to majordomo@thekrib.com> > with "Unsubscribe gsas-member" in the body of the message. Archives of> > this list can be found at http://lists.thekrib.com/gsas-member/ > > > > _________________________________________________________________ > Get tax tips, tools and access to IRS forms - all in one place at MSN Money! > http://moneycentral.msn.com/tax/home.asp > > ------------------> To unsubscribe from this list, please send mail to majordomo@thekrib.com> with "Unsubscribe gsas-member" in the body of the message. Archives of > this list can be found at http://lists.thekrib.com/gsas-member/ > ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe gsas-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/gsas-member/
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