Barksavon
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| posted on 23/12/18 at 09:21 AM |
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Best Abrasive for Removing Paint
Can anyone recommend the best abrasive to use for stripping several layers of paint from steel. I've got a small blast cabinet that runs at
about 90psi and the abrasive I'm using isn't having much effect. I'm thinking of trying some paving sand, I think I need the most
aggressive abrasive i can get.
Thanks
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ste
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| posted on 23/12/18 at 09:51 AM |
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Aluminium oxide. Definitely not sand!
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macc man
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| posted on 23/12/18 at 11:04 AM |
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I have a large tub of aluminium oxide grit free if you want it. I am in Macclesfield so not too far away.
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rusty nuts
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| posted on 23/12/18 at 11:30 AM |
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DO NOT USE SAND IF YOU VALUE YOUR HEALTH! I'm sure others have and have got away with it but it's not worth the risk . Have you tried a
wire wheel or flap disc in an angle grinder? Or even a decent paint stripper if you can find one ? The MIG welding forum has some useful information ,
well worth a look.
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big_wasa
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| posted on 23/12/18 at 11:32 AM |
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You don't want sand as A) its not good for you, Look up Silicosis. And B) its wet and will just clogg up.
Recycled crushed glass Is cheap.
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40inches
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| posted on 23/12/18 at 12:34 PM |
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I used kiln dried paving sand in my blast cabinet, worked very well. No problem with health in a cabinet, unless you stick your head in it
Karcher sell large tubs of dry sand for use with a jet wash blasting attachment, used for removing graffiti from walls. That also works well in a
cabinet.
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Barksavon
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| posted on 23/12/18 at 01:09 PM |
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Thanks for the replies guys.
Just checked the label on my tub of grit and it's 60 grade aluminium oxide from machine mart.
Thanks for the offer of the free tub macc man, as it's already what I'm using I'll leave it, but again thanks very much.
Wasn't aware of the health issues with sand....👍👍.
Has anyone tried the coarse grade crushed glass in the small diy cabinets...Does it clog?
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DanP
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| posted on 23/12/18 at 10:50 PM |
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Nitromors does a great job, why not use that?
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Angel Acevedo
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| posted on 24/12/18 at 02:07 AM |
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Vitrified Copper slag...
Beware of what you wish.. for it may come true....
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rusty nuts
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| posted on 24/12/18 at 07:56 AM |
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quote:
Originally posted by DanP
Nitromors does a great job, why not use that?
20 years ago it was brilliant stuff, now the H and S have had thier say its useless
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40inches
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| posted on 24/12/18 at 10:34 AM |
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quote:
Originally posted by rusty nuts
quote:
Originally posted by DanP
Nitromors does a great job, why not use that?
20 years ago it was brilliant stuff, now the H and S have had thier say its useless
It's now crap 
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DanP
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| posted on 24/12/18 at 11:06 AM |
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quote:
Originally posted by 40inches
quote:
Originally posted by rusty nuts
quote:
Originally posted by DanP
Nitromors does a great job, why not use that?
20 years ago it was brilliant stuff, now the H and S have had thier say its useless
It's now crap
Oh that’s a shame, I last used it in about 2006 to strip and clean my engine and donor bits.
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leon51274
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| posted on 24/12/18 at 01:41 PM |
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Have a search for strippa disc, i swear by these for removing rust but they also remove paint.
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Barksavon
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| posted on 24/12/18 at 11:19 PM |
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Agreed those discs are really good, took my Austin A35 to bare metal using those.
Issue I've got is I'm trying to strip paint off some wrought iron work so getting into all the 'nooks and crannies' is a bit
awkward.
Thanks for all the suggestions though.
Ian
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rusty nuts
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| posted on 25/12/18 at 08:26 AM |
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Powerfile can get into awkward places as can a die grinder using carbide burrs or even a 3" wire wheel , I've even used emery roll wrapped
around a file to do the job. Is it worth or practical getting a professional blaster in to do the job ?
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cliftyhanger
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| posted on 25/12/18 at 09:35 AM |
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I had to strip some cast iron fireplaces back in the summer.
And they were still inside a house, so no chance of using abrasive or SynStrip (just like old nitromors)
I took a punt on using Screwfix NoNonsense stripper. And it worked really well, if slow.
The tip I followed was to paint a thick layer on, and put tinfoil straight on, and leave overnight. (this would work well with sunstrip etc, as the
active ingredient, DCM, evaporates very fast. Tinfol stops that so gets the stripper to get into the paint)
The old gloss paint, several layers, came off with a wire brush, and a bit of poking with a small scraper in the intricate bits. No nasty smells or
dust, so a win for me.
I tried a home blast cabinet years ago, and gave up as it was so slow. I do remember fiddling with the gun nozzle length a bit, that helped, but
really you need a massive compressor to be able to work at any speed. And at 90psi abrasive will probably bounce off old gloss paint.
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Barksavon
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| posted on 25/12/18 at 10:51 AM |
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quote:
Originally posted by cliftyhanger
I tried a home blast cabinet years ago, and gave up as it was so slow. I do remember fiddling with the gun nozzle length a bit, that helped, but
really you need a massive compressor to be able to work at any speed. And at 90psi abrasive will probably bounce off old gloss paint.
Yes I think it's the lack of air power and a carp cabinet that's the problem rather than the abrasive
[Edited on 25/12/18 by Barksavon]
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nero1701
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| posted on 25/12/18 at 04:12 PM |
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quote:
Originally posted by Barksavon
Agreed those discs are really good, took my Austin A35 to bare metal using those.
Issue I've got is I'm trying to strip paint off some wrought iron work so getting into all the 'nooks and crannies' is a bit
awkward.
Thanks for all the suggestions though.
Ian
Why not use electrolysis ?
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Barksavon
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| posted on 27/12/18 at 12:46 PM |
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Does electrolysis remove 'sound' paint or flaky and rusty stuff?
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nero1701
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| posted on 27/12/18 at 01:34 PM |
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quote:
Originally posted by Barksavon
Does electrolysis remove 'sound' paint or flaky and rusty stuff?
Should take you to bare metal
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