How to sand plaster?

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.
pg

How to sand plaster?

Postby pg » Mon 22 Jul, 2013 22:26

Ok I sanded my pool last december to get rid of all the calcium buildup. It went very well. I used a wet sander and diamond pads. I found a 4" very soft backer pad for the inside bench seats back corners & a 7" semi soft backer for the floor & benches. 100-200-300 grit pads. It took about 1/2 day for a 12,000 gal pool. It would have been nicer in a warmer month but water is cheapest in dec. only $50.
I did the flat areas with the 7" pads and a semi-soft backer pad. Then with the smaller backer pad I put on the same diamond discs since the edges wear out first and with the smaller backer pad I got more out of them.
I got rid of the salt system and things are pretty good. I do seem to get a nugget of calcium growing here and there . I guess this is where a anomaly is that attracts the minerals to grow. I was told to acid wash it after to stop this but the pool was very smooth and I wanted to keep that. I think I am still having minor problems because we keep our pool very warm 90 deg. with solar. But at least I can fix it myself now.
I am working now on making a underwater sander that runs with a pressure washer. I saw one on youtube before. I am just using a Harbor Fright Pneumatic sander with the 2 yr warranty of course. This will let me touch up the spa and seats of the pool without draining. The tool fits all my diamond pads and the backer pads from the wet sander. I am borrowing a pressure washer tomorrow to see how it goes. My yard water hose has 100 psi but it runs it to slow. I expect if it works it will only take 2 hours to completely freshen up those areas with out being on my knees like with the wet sander and an empty pool.


pg

How to sand plaster?

Postby pg » Mon 22 Jul, 2013 22:29

EW wrote:I have a salt pool. Has anyone ever heard of using pool salt as the sand blast medium? It would be easier to have the salt dissolve in the pool then worry about clean up of beads and glass.


Salt is to soft and will turn to dust on impact. Glass beads are just the right hardness and can be collected and dried for reuse. Had it done 10 yrs ago it was amazing. But only for tile I am told.
pg

How to sand plaster?

Postby pg » Tue 23 Jul, 2013 20:34

pg wrote:Ok I sanded my pool.............. wet sander and an empty pool.


Ok today I hooked up the pressure washer and what a flop. Just not enough flow. I went ahead and touched up my seats with the 100 psi garden hose setup but plan to switch to a compressor and use the tool as it was designed some time in the future.
Why I still have trouble with build up is beyond me except for the heat the pool sits at all summer. But I can now remove it.
If you have any questions with what I used or to see my pneumatic tool modification just ask.
gick@earthlink.net
kmorgan

How to sand plaster?

Postby kmorgan » Thu 25 Jul, 2013 10:23

I had my pool acid washed NEVER AGAIN, ended up having to have resurfaced

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