wet sanding hotcoats

General Discussion
1

Hey guys

I was wondering if any one has heard of or done any wet sanding of hot coats.

Now I am not talking about sanding by hand with wet/dry paper.

More as to spraying a little water over the board while sanding with your sander.

I thought I remember reading this here on sways some time ago, but I cant seam to find it.

I was thinking that this would be a good way to cut down on all the dust floating around my garage.

Would also keep my wife happy so there is no dust on the cloths dryer.

Has anyone tried this and what result were had??

Epoxy and Poly

Cheers

2

It will work however the roughest grit I could find for wet sandpaper was 180 grit. I like to start the hot coat sanding with 50 (rail laps), then 80 and finish with 100. It would be nice to find those grits in wet sandpaper on a regular bases.

D

3

…hey UncleD,

60 grit - up is normal in 3M and Norton wet sandpaper

4

…poly

I prefer to sand without water in the heavier grits

is better

with the water you have an “illusion of false smoothness”

then you ll see all the scratches…

sand first the laps, then do the bottom HC; then start sanding with 100 grit, but without pushing too much the sander.

go to 120 grit and press a bit more, but bit more only

then start to “real” sand with 150

perfect sanding work for the HC

—the sanding (what grit and the work with the tool) depends on the final finish (Gloss, double HC, HC, Speed finish)

5

Hi Mds,

I am sure the hardware sells 80# and 100# grit wet/dry.

make sure you’ve got an RCD or ELCB ( safety switch ) on your garage circuit. water and power tools don’t mix so hot.

I start with dry 100# dry paper then go to the wet/dry for the rest.

Good Luck.

Daren

P.s. You won’t get dust everywhere, but a white slurry of crap over everthing within eyeshot.

6
Quote:

Hi Mds,

I am sure the hardware sells 80# and 100# grit wet/dry.

make sure you’ve got an RCD or ELCB ( safety switch ) on your garage circuit. water and power tools don’t mix so hot.

I start with dry 100# dry paper then go to the wet/dry for the rest.

Good Luck.

Daren

P.s. You won’t get dust everywhere, but a white slurry of crap over everthing within eyeshot.

Hey Daren

To be honest I haven’t even looked into weather I can even get those sort of grits in wet/dry.

I may have to change my sanding pads also. I have the velcro type.

If I can I was trying to avoid dry sanding.

The main reason for this is that I used to do all my work in a garden shed in the back yard with a bathroom exhaust fan.

Work OK

Now I have a pool where my shed used to be and have build a room in my garage.

If I put a fan in that room, I will blow dust all into my pool.

If I don’t it will end up all through the garage.

I think a white slurry will be easier to clean-up and wont seep through all the small gaps in my room into the main garage

And yes, safty switch is a must.

Cheers

7

Hey Guys

Just went to Bunnings. (I think its the same as Walmart for you Americans)

Wet/dry sandpaper available in grits of 80, 120, 180 and up.

Only in square sheets though.

I think I will have to get myself some adhesive type sanding pads and cut and glue the paper.

Then I suppose I will have to give a try and see what happens.

Cheers