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Sand Blaster ?

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Andy in Ohio

12-29-2003 15:29:55

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Whats a good brand of sand blaster to set up for doing tractors. Also whats the most efficient way of using it,Air and sand. Thanks in advance, Andy

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Butch

12-30-2003 17:39:39

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Re: Sand Blaster ? in reply to Andy in Ohio, 12-29-2003 15:29:55

Andy, if you are planning to do a volume like Larry806 you need a good quality high production blaster but if you are talking about a tractor or two it would be a waste to own one of those in my opinion. I bought the cheapest pressure blaster they sell at Harbor Freight, holds about 40 lbs of sand, and I can do all the sheetmetal for an avarage tractor in a couple hours including filling time. I dont blast motors, transmissions or rearends but given a good day Id do it all with ease. When talking speed of removal the air compressor is what makes a blasting outfit not the blaster. I have what I belive to be a nice air compressor in my shop, 8HP 2 stage but it left a lot to be desired for blasting. I found an old 125CFM Jeager cheap and now I can blast like the dickens. Check your local equipment traders, older gas engined compressors are cheap

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Andy in Ohio

01-01-2004 07:38:07

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Re: Re: Sand Blaster ? in reply to Butch, 12-30-2003 17:39:39

Butch, how long have you had a harbor frt. blaster? Do you think it will last? I hate to donate any more $ to Taiwan any more than I have to, if you know what I mean. Ill check into old comps. at some auctions. Thanks for the advice, Andy

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LarryG

01-06-2004 17:19:39

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Re: Re: Re: Sand Blaster ? in reply to Andy in Ohio, 01-01-2004 07:38:07

I have one of those HF 40# sandblasters for the parts I can't fit in my American made blasting cabinet. It's ok, but I've gone through shutoff valves, and they are 3/8" which I find a little hard to find locally and I ended up bushing up to 1/2" to keep going. I started out using fine sand from Home Depot but I was shutting down every few seconds to clean out the nozzle(my fault). I smartened up and started sifting the sand through plain window screen and what a difference. Now I ca get real running time out of it. It's powered by a 6.5 hp, 2-stage , 60 gal compressor which just keeps up with it.

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Butch

01-01-2004 09:19:11

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Re: Re: Re: Sand Blaster ? in reply to Andy in Ohio, 01-01-2004 07:38:07

I have done several tractors with it and only replaced nozzles. I am with you on the Chi-Com deal but when buying certain tools for 10% of American I sucumb to being cheap.

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Rod (NH)

12-29-2003 21:24:53

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Re: Sand Blaster ? in reply to Andy in Ohio, 12-29-2003 15:29:55

Hi Andy,

If you are serious at all about sandblasting entire tractors, you certainly need to look at pressurized blasting equipment. The little suction blasters simply are too slow to be effective on that kind of scale. I don't know what you are thinking about regarding compressor capacity but consider what Larry is saying. 100-200 CFM (about 50 HP) could be orders of magnitude greater than you anticipate. You may have to get up into this area ($$$ or rental) if you want to be at all effective at it.

In any event, please think long and hard before deciding to "build your own" pressurized blasting tank. There is a serious potential safety hazard involved in such a home brew tank. Plus, if you ever decided to hire a helping hand using the thing (commercial setting), you could run into some serious legal problems concerning uncoded pressure tanks, depending on your state laws regarding periodic inspection and certification of such things by state authorities.

Rod

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Slowpoke

12-30-2003 00:37:19

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Re: Re: Sand Blaster ? in reply to Rod (NH), 12-29-2003 21:24:53

So far, I've managed to buy two used 90lb pressure tanks, neither of which has a nozzle. Should I buy a deadman valve with the rubber blocks or a gun type like that sold by TIP in Ohio? Is the gun type suitable for use in a blast cabinet?

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Rod (NH)

12-30-2003 16:47:52

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Re: Re: Re: Sand Blaster ? in reply to Slowpoke, 12-30-2003 00:37:19

Hi Slowpoke,

The pressure blaster I have has a deadman valve with the rubber block. I can't say that I like it. In fact, I actually dislike it! The spring on the handle is quite strong. Since I don't have a gorilla grip it becomes tiring in no time. I have also found that that damned rubber block has a very short lifetime and is difficult to adjust to get complete shutoff repeatedly. Some people have been know to defeat the safety feature of such a device by either removing the handle or clamping it open. That solves both problems. Of course I would never actually recommend such a practice.

I can't comment on the gun type since I have never used one. All the cabinets that I have noticed seem to have that style though. I would think they would be more appropriate for the suction style blaster since with a pressure blaster the blast material would have to pass through the valve as well as the air, leading to high wear rates. If anyone has any knowledge of a gun type nozzle used on a pressure blaster I would be interested in their thoughts. Might be able to improve my own arrangement :o).

Rod

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Slowpoke

12-30-2003 22:07:35

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Re: Re: Re: Re: Sand Blaster ? in reply to Rod (NH), 12-30-2003 16:47:52

Rod, today is my lucky day....or is it? I happened to stop at an old time, no computers, auto supply/machine shop in the next town. Several times I've tried to get the owner to install a pot belly stove and some cracker barrels, but he refuses.
There is usually some used tires, a couple of old engine scopes, and other semi-obsolete shop equipment laying around the store that might or might not be for sale. As I wandered around I discovered an almost new Trumans 99-S sandblaster with a 10' hose and '38' pistol grip nozzle. The owner said he bought it from the estate of a deceased friend, and he wasn't planning on selling it.
Needless to say, in 10 minutes I was the proud new owner. Now I have three blaster tanks and 1 hose & nozzle!
But....remembering your request about pistol grip nozzles, I went to the Trumans web site and found that the owner retired and closed the business in '02. I don't know if anyone else is making that gun, but at the bottom of the page is the "liquidation" address info. You might inquire there about any remaining stock of the '38' gun. Search for "Truman San-blast", and you'll eventually get the retirement home page and the names of replacement part suppliers

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Larry806

12-29-2003 16:02:40

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Re: Sand Blaster ? in reply to Andy in Ohio, 12-29-2003 15:29:55

Andy I've blasted over 400 tractors ( I've done it over almost 20 years) How fast do you want to do them? I have a 185 CFM comp. & a 350 lb sand valve. I have to be a little careful on sheet metal I can warp it. That's about as big as I would want. I have plates made for all openings to seal out sand. I can do a tractor main frame in about 4 hr's. That's every thing but the sheet metal A friend has a 900 CFM & 800 lb sand valve He has to stand back about 10 ft & I wouldn't want to work with the results. If you want to go smaller I see 100 CFM comp's cheap sometimes You can build your own sand valve for around 100.00 That is a good pressure tank I'm also in Oh

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Larry806

12-29-2003 16:02:13

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Re: Sand Blaster ? in reply to Andy in Ohio, 12-29-2003 15:29:55

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Andy in Ohio

12-29-2003 18:20:15

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Re: Re: Sand Blaster ? in reply to Larry806, 12-29-2003 16:02:13

Larry, is it cheaper to build a blaster? If so what materials do I need? I probably wont do more than 2 to 3 tractors a year. A friend loaned me his homemade blaster but it doesnt remove material that quickly. My comp. will do 125 psi. into a larger tank. Will this be enough pressure? Also Where can I get these parts to build one? Thanks, Andy

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Larry806

12-30-2003 20:18:13

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Re: Re: Re: Sand Blaster ? in reply to Andy in Ohio, 12-29-2003 18:20:15

Pressure isn't where it's at in blasting my 185 only makes 110 lbs pressure but it send's A LOT of it You need to know what CFM your working with I have built half dozen 100 lb sand valves for people I use air tanks from semi's ( there dot approved Rod lol) It's just a matter of welding a couple fittings in them. I haven't done one for a few years but I used to build them for less than 1/3 of what thy wanted up town & not bragging mine were quite a bit better. I have a Anderson 350 lb sand valve I just copied it on a smaller scale. I install a "trip" valve so if you get moisture or other small problems with the flow you just turn a valve & it blows it out, turn it back & back to blasting Andy where are you at in the buckeye? Larry

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Andy in Ohio

01-01-2004 07:25:18

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Re: Re: Re: Re: Sand Blaster ? in reply to Larry806, 12-30-2003 20:18:13

Larry, Im in the Sunbury area, about 25 mi. N of columbus. Where are you located, maybe I can get some schooling from you on making one. I have also looked at the cheap ones, but didnt know if they would hold up. If pressure is what i need most then maybe I'd better get a bigger comp. as Butch suggests, along with a better blaster. Your thoughts? Andy

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Butch

01-02-2004 06:58:58

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Re: Re: Re: Re: Re: Sand Blaster ? in reply to Andy in Ohio, 01-01-2004 07:25:18

Hey Andy you are only 20 minutes from me (Mt Vernon) You would be welcome to come look at my cheapo blaster outfit and $200 air compressor. email is lcherrin@columbus.rr.com

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