Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Panic mechanic! on April 22, 2009, 10:03:27 AM

Title: Sandblasting/media blasting
Post by: Panic mechanic! on April 22, 2009, 10:03:27 AM
got myself a media blasting gun for removing the rust from the yj  tub and cleaning up small areas, anyone used one? I know the safety side of things but wondering what is the best media to use to clean up the rusty areas?
Title: Re: Sandblasting/media blasting
Post by: PtP on April 22, 2009, 10:13:27 AM
I can’t really answer the question about rust  removal on your YJ, but I have a sandblaster attachment for the Karcher pressure washer and rather than using expensive grit, I bought a bag of kiln-dried sand from the local B&Q and it seemed to work a treat on metal garden furniture.
Title: Re: Sandblasting/media blasting
Post by: Bulldog67 on April 22, 2009, 11:29:47 AM
tell me more about that attachment please Pete
Title: Re: Sandblasting/media blasting
Post by: Panic mechanic! on April 22, 2009, 12:04:01 PM
I looked at them but came up with the idea that using one that blasts using water, is just a bad thing for the likes of bodywork,you want to keep moisture aways from clean metal but its ok for iron etc and cleaning brickwork etc.
Title: Re: Sandblasting/media blasting
Post by: PtP on April 22, 2009, 08:19:12 PM
Quote from: "Bulldog67"
tell me more about that attachment please Pete
Here is the Karcher kit, but I think I bought a B&Q cheapo version which I adapted to do the job.

(http://http://www.cleanstuff.co.uk/acatalog/karcher-sandblasting-kit-KAR2638792-PRODUCT.jpg)

http://www.cleanstuff.co.uk/cgi-bin/sh0 ... KAR2638792 (http://www.cleanstuff.co.uk/cgi-bin/sh000001.pl?REFPAGE=http%3a%2f%2fwww%2ecleanstuff%2eco%2euk%2facatalog%2fKarcher_Accessories%2ehtml&WD=sand&PN=Karcher%2dK299%2dPressure%2dWasher%2ehtml%23a2_21KAR2638792#a2_21KAR2638792" onclick="window.open(this.href);return false;)

The point I was trying to make in my original post was that the proper grit is very expensive, but the kiln dried sand was a fraction of the price.
Title: Re: Sandblasting/media blasting
Post by: Bulldog67 on April 22, 2009, 08:31:48 PM
:roll: cheers young man
Title: Re: Sandblasting/media blasting
Post by: Panic mechanic! on April 22, 2009, 08:34:08 PM
I will be trying that kiln dried sand first, just got to get it into the range of the air hose.
Title: Re: Sandblasting/media blasting
Post by: mikesknives on April 23, 2009, 12:16:57 AM
I used to have a pressure pot type blaster and used Kiln dried in it, works a treat.

Heres the secret to using kiln dried, sieve it first.  It's full of big lumps of charcoal and it's was forever blocking the tubes untill I started sieving first.

Maybe big lumps is an exaggeration but fairly big compaered to a grain of sand!
Title: Re: Sandblasting/media blasting
Post by: Nexus on April 23, 2009, 07:51:40 AM
You need to be very careful with sand due to the silicone content and the risk of silicosis from the dust that is generated, blasting media is producd from materials to reduce this risk.


Cheers
Nick
Title: Re: Sandblasting/media blasting
Post by: greggmo on April 23, 2009, 08:17:10 AM
the plastic media is best and safest.
Title: Re: Sandblasting/media blasting
Post by: Bubba on April 23, 2009, 12:26:38 PM
needle gun
Title: Re: Sandblasting/media blasting
Post by: Dave69 on April 23, 2009, 07:21:45 PM
Quote from: "V8 Bubba"
needle gun

these are good but they can punch holes in thin metal creating more welding work.

the sand blast bits are good but they are a pain to clear up after
Title: Re: Sandblasting/media blasting
Post by: Panic mechanic! on April 23, 2009, 09:41:49 PM
its only for cleaning small areas and the end of the roll bar bolts so i can remove the  fecker, and yes i have masks and goggles etc quite aware of not wearing the correct safety wear, when i was younger i ended up in hospital due to breathing in iscocyanates i think thats how its spelt but it fucked my stomoche up good and propper
Title: Re: Sandblasting/media blasting
Post by: momos on April 23, 2009, 09:45:00 PM
not beers n burgers then?  :wink:
hehe
Title: Re: Sandblasting/media blasting
Post by: ferretjuggler on April 23, 2009, 10:41:17 PM
Go and ask someone who runs a blast cleaning business about the health risks of using non aproved blasting media and the possible long term damage to ya lungs.
Also remember it aint just what your blasting with, it's what's coming off the surface too.
Guy I know uses an umbilical air fed mask all the time when he's blasting.
Title: Re: Sandblasting/media blasting
Post by: daggie on April 24, 2009, 08:17:26 AM
try to get some "J Blast, Supa" or SC

from here http://www.hodgeclemco.co.uk/ (http://www.hodgeclemco.co.uk/" onclick="window.open(this.href);return false;)

or ask for a stockist local to you

I hope you have a LARGE compressor


It may be easier to fnd a blasting company local, saves clearing up  :mrgreen:
Title: Re: Sandblasting/media blasting
Post by: isle of man on April 24, 2009, 10:26:40 AM
I have been know to blast after a good curry!!! of so Mrs H tells me...
Title: Re: Sandblasting/media blasting
Post by: Bubba on April 24, 2009, 09:39:39 PM
unless you done got a uber compressor  ya might as well try an sand it down with ya ass cheeks