RO90 Granat clogging -- suggestions?

[j-becker]

Hello,

I tried to strip some exterior paint off a gable using my newly acquired RO90.  I have used Granat P60 and the paper quickly clogegd.  But the clogging mode got my thinking whether it may be more my technique than the paper: it looks like paint flakes are coming off the surface and then stick to the paper.  I tried to reduce pressure and suction but the effect stays the same. 

[attachimg=1]
clogged disk (Granat P60)

Is there a better paper to try?  One of my next projects is sanding a small deck where the paint is failing (and pressure washing did only remove the loose paint).  Any recommendations regarding the paper I should try?

Thanks,
Johannes

 

[Locks14]

Although 60 grit is pretty coarse, for initial removal I'd drop down to a lower grit like 24. Alternatively if the paint is quite thick, getting the bulk off with a heat gun and scraper before sanding is a better plan of attack.

 

[Wuffles]

Don't think there is a 24 grit for the RO90 in rotary mode, only for the Delta head.

 

[Locks14]

Don't think there is a 24 grit for the RO90 in rotary mode, only for the Delta head.

You are correct. There is a 40 available though.

However, heat stripping would still be my first choice to get the bulk off.

 

[peter halle]

I also would try a coarser paper.  But before you do that you might want to experiment with the speed and slow it down.  That will reduce the heat which helps the old finish melt onto the pad.  There will always be a compromise between speed and getting the job done and loading the paper.

Peter

 

[j-becker]

Thanks a lot for the suggestions.  I am going to order some 40 to give it a try.  It was only a relatively small area so changing disks often worked out in the end.  However, It took me about 8 disks to get about 15 sqft sanded.  Not sure I want to tackle any bigger projects that way  [unsure].

 

[Phil Beckley]

Thanks a lot for the suggestions.  I am going to order some 40 to give it a try.  It was only a relatively small area so changing disks often worked out in the end.  However, It took me about 8 disks to get about 15 sqft sanded.  Not sure I want to tackle any bigger projects that way  [unsure].

Hi
40g/60g with no downward pressure so the pad skates over the surface lightly - prevents heat. This scuffs the surface ready for the next pass and works well.
rg
Phil

 

[rst]

I often sand plastics, acrylics, polycarbonates, and ABS.  To prevent melting I slow down the speed and reduce the pressure.  I also keep a brass wire brush and ice pick that I use to brush out clogs as some of the belts for my stationary sanders cost $5-8 @.

 

[Brent Taylor]

I have run into this problem also, I found if you use a lower grit,slower speed and a gummy block to clean the disk. I have found that it is easier to clean in rotex mode.

 

[j-becker]

I have ordered another pack of 40 grit so I can experiment with 40/60 to see what works best.  I like the suggestions on how to clean any paint chips that get stuck.  I thought that those chips are the limiting factor.  I tried denaturated alcohol but that did not work in this case.  So gum block and brass brush are my next two things I am going to try.  I will report back what I find.  Thanks a lot for all the help!

 

[unityroad]

Yeah, keep the speed all the way down. Enough pressure to keep sander flat. Good luck.