Thread: Sand Blasters and soda blasters

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Originally Posted by shine

sand will promote rust. soda leaves no anchor pattern but does leave a residue that if not completely removed will cause adhesion problems. olivine is a good media .

panels do not warp from heat. it is the penning of the metal that stretches it. you must stay at a 45 degree angle to the surface. also high pressure is not needed. my big rig only runs at 35 lbs .

My car was soda blasted, cleaned and epoxy primed. I set my windshield with the old sticky seal in (years later) and when I went to take it back out it was a little stuck and I ended up ripping off the primer down to bare metal It doesn't make me feel very comfortable for when I spend thousands on a final paint job

i run an 1 1/4 hose from a 185 cfm comp. i have a 3/8 tip and only tun 35 lbs of pressure. the less media you get the better the job. if you have a pressure blaster you must have more pressure than the service hose or media wont come out. to much media and you choke the hose. high pressure will get you nowhere but out of media. warpage is not caused by heat but rather from stretching the metal with the anchor pattern . made worse by shooting at 90 degrees. turn it down , shut the media off then adjust to get just a little media.

35 coupe , you have just witnessed the reaction between epoxy and acid . the layer of epoxy next to the metal will not cure. which in turn causes less adhesion and sometimes bubbles. this is the very reason i did not invest in a soda setup instead of the rig i have. this isn't my opinion it is the facts. i spent a year researching before investing. i found acrylic will do the same job as soda , leave no residue , and i can recycle the media.

Most of the good operators down here use garnet,,a lot cleaner,does not rust,can be re used. I use it myself in little jobs on my own cars.I have seen the problems with soda blasting,as it seems to leach out of seams and joints for some time,and have known a few people who have had to strip their cars again a year or two down the track,as they have had problems with the paint job..Dont think I would go there..I still use the old fashioned paint stripper method..