We decided early on that sandblasting was the way to go for restoring this old Mustang. It's messy, but it's really the only way to get 40 years of rust off.
I've had a little experience acid dipping, but I've always felt like I could never get the metal completely acid-free, plus there's the safety issues of working with a caustic liquid. I've also sent whole fenders and doors away to be dipped professionally, which is fantastic, but there's no one near us that does that, and the cost doesn't fit in our budget.
We were offered the use of a large commercial sandblasting cabinet by one of the local race shops in town, the Spirit of Daytona Grand-Am race team (the team owner's father-in-law works for me). The facilities were great, and Daniel got a kick out of being
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| Our new toy ready to work |
amidst the operations of a professional race shop, but to use the equipment we had to pack up parts and carry them to the shop. Not the most convenient if you want to work on your own schedule.
I decided to pop into Harbor Freight Tools one afternoon to see what they had in the way of sandblasting cabinets, and lucked into a store sale plus an on-line coupon that put the price of a stand-up cabinet at $189. I couldn't pass it up!
This cabinet came in a flat box of sheet metal panels and nuts and bolts. Every single component had to be assembled. A perfect job for a teenager on a summer afternoon! The instructions weren't the most clear, but between that and the picture on the box--plus about three hours of assembly--we had our new toy!
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| The modified siphon hose with tee |
We couldn't wait to try it out, but the $1.50 bag of play sand I bought at Home Depot was more like mud when we opened the bag, so we had to go back to Harbor Freight and shell out $45 for a box of glass beads. Definitely not a budget item, but we wanted to get going!
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| Siphon hose on right, air hose on left |
As an aside, a lot of people frown on using play sand because of the quality and the dust factor (which can be dangerous without a respirator) but I've found it to be quite effective as well as economical. Even when I've blasted in the driveway, I sweep it back up, sift it through an old window screen, and run it through again. I can get three or four cycles out of a bag before it gets too fine.
Our new cabinet used a siphon tube that was jammed through the support rack into the sand below. This worked fairly well, but it severely limited the amount of useable space in the cabinet. After doing some reading on line about others with the same cabinet, I copied a modification that works really well.
I deleted the siphon tube, and instead drilled a 1/2 inch hole on the side of the funnel chute. I drilled another at the top side of the cabinet and routed my sand feed tube from the chute to the side of the cabinet. I used a 1/2 inch copper tee at the chute with a cap on the tee that provides the small amount of airflow necessary for the sand to get sucked up the tube. The copper cap has a couple of tiny holes drilled in it for air flow. I reattached the siphon hose on the inside that feeds into the gun. The modification works better than
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| The only thing else we need is a stool! |
the tube and frees up more space to work in the cabinet.
I also added a water separator at the air inlet, because the condensation will clog up a blasting gun in minutes without it. The humid Florida air doesn't help either.
You'll notice a shop vac sitting to the left of the cabinet. This is also crucial to pull air through the cabinet and suck the dust out. Otherwise the cabinet clouds up almost immediately and you can't see what you're doing. The heavier sand drops back down, so only the dust is pulled out. All in all, a really functional unit and well worth the money!
Now Daniel pops on his headphones and dives in to work. He's been passing out one piece after another ready for primer and paint. Things are starting to happen!