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Re: [APD] Used Acrylic Tank Repair
If you use wet-dry silicone carbide "sand paper" you probably do not want to start with grit any larger than about P800 and work down to P1200 and then as fine as you can get. Then go to the polishes. If the polishes seem to not remove marks from the sanding, then use a rubbing compound and then go gack to the polishes.
BTW, P24000 grit would be about the equivalent of the abrasiveness of your fingers.
P12000 is about the finest you're likely to come across if yo check out wood workeer supply or hobbiy houses and look for micromesh sheets -- for one quick exmaple:
http://www.woodcraft.com/search/search.aspx?query=micromesh
Note that there are different systems for rating the grit of sandpaper -- confusing them can lead to disappointing results:
http://en.wikipedia.org/wiki/Sandpaper
Also, never us e the same pad for diff grits of polish, and always remove all traces of grit from the work sruface before going from one grit to another -- otherwise you'll be pushing around bits of the larger grit, making the finer gritwork useless.
Good luck, eat a hearty breakfast before you start.
sh
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----- Original Message ----
From: Vaughn Hopkins <hoppycalif at yahoo_com>
To: aquatic plants digest <aquatic-plants at actwin_com>
Sent: Monday, June 26, 2006 11:40:56 PM
Subject: Re: [APD] Used Acrylic Tank Repair
You can buy solvent based cement for acrylic plastic at plastics
stores, like Tap Plastics. This stuff does a weld when you use it
as glue and it isn't hard to use. I would do it with the tank upside
down to avoid the solvent running down the side of the tank. To get
rid of scratches, the best way is to use "wet or dry" sandpaper, used
wet with water. Use one of the coarser grits first, followed by each
finer grit until you are using the finest grit. Then polish it with
at least two grades of polishing compound and a buffing wheel. It is
hard, time consuming work.
Vaughn H.
On Jun 26, 2006, at 8:09 PM, Billy Reiter wrote:
> I recently purchased a used 50 Gallon rounded acrylic Freshwater
> tank with
> built in 15 Gallon Sump. I got it for 20.00 and in need of some major
> repairs. It was a cheap price, so I thought I would give it a try.
> The front panel has separated from the top piece of acrylic and I
> need to
> get something to re-'weld' them back together.
> The tank holds water, although at the moment it bows severely due
> to the
> separation. Any suggestions on a substance that will fix this?
> The tank also is pretty badly scratched with some clouding all
> over. Has
> anyone had any lick with acrylic repair kits, and/or
> recommendations for
> fixing this?
> I'm not really expecting to make this a show tank, but I would like
> for it
> to look nice while acting as a breeding tank for my Cherry and CRS
> shrimp.
> Thanks,
> Billy
>
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