Sand Blasting?

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Ford_Crazy

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I'm getting a little tired of picking away at the undercarriage of my Tiger. I have most of the undercoating off, but can see the value of a small sand blaster. I will need to buy a decent compressor and don't want to over buy. Any input on the minimum size compressor that will do the job? Any tips I should know? Thanks!
 
Blast Away Mate

Media blasting requires more cfm and psi than you'll ever need again. It's best left to someone schooled and equiped for it in the first place. Messy beyond your wildest dreams and if you hammer on a broad panel at 90 degrees for a split second too long, it will warp and never return. And don't forget to apply generous portions of self-etching primer immediately after the metal is bared whether you intend to re-work the area or not.
Having said all the warnings, check out the media blast tanks from tool places like Eastwood or TP and follow their recommends for cfm/HP/psi sized compressors. Don't forget spare nossles and head & ear gear. Black beauty media you can get anywhere.
 
Phew! What he said. Build a tent or compartment to contain the mess and keep it out of the rest of the car and out of your workshop/garage/home. Raise the car and drape and tape like crazy, then put on mask, goggles, ear protection, gloves and the like, climb under there with it (take some lighting with you too) and get it done all at once. I think I spent a week of evenings the time I did it (not a tiger but a healey). If you don't want the giant compressor forever, try to borrow or rent one instead.
 
I have used soda blasting with great success--plus way less messy. With sand blasting you are having sand fall out of cracks forever, plus if you go to paint it always seems to come out as you are applying paint--thus ruining your paint job. Clean up with soda blasting is easy---wash it away with water, it leaves a film on the bare metal so it won't rust, when ready to paint sand, prime and paint.
 
Sometimes doing it fast is not the answer. I can understand wanting a clean bottom...........I always did.

The problem is wanting to get the car on the road, at least that is what pushes me too do things as quickly as possible.

I finally came too the conclusion I wanted a driver.

So I left my bottom alone..........
 
Intersting Bath method for de rusting

While cleaning a motorcycle gas tank using Sodium Carbonate, aka Arm and Hammer washing soda water and a battery charger I found myself in a Rube Goldberg day dream.

The dream had the car body in a above ground pool hooked up and electrolitically de rusting itself. I mean it works so well on the tank I will never use acid or Kreme or gas tank coatings again. I was thinking of doing some small parts and had tried and liked the Evaporust product but it has gone up 10 bucks a gallon at Harbor freight to 29.99. The Evaporust web site has a guy doing it with a bottle sprayer with good results. I have some light surface rust in the heater core well and want to fill it with the Evaporust or the Sodium Carbonate sacraficial annode charger method. If you plug the drain for the heater well I wonder if/where it will leak?

I have learned that life can get in the way of hobby fun and really try to never take something apart so far I can't get it back together in a day, easier with bikes and small motorcycles to say the least. There is something to be said for the fella who sent in his testimonial on the Evaporust website and it is try not to bite off more than you can chew. How vehicles get stripped then sold as a basket case?

I have no connection with Evaporust but it is worth a look.

Sorry about mi spellun where'd da spell checkkk

Warren in So Cal
 
Try heat gun to remove most undercoating then sand blast
Click to expand...


This is the way i have removed underseal on the Tiger and others. Then use petrol and a rag to remove the residue.
Sandblasting is best for the removel of rust.
 
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