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06-18-2015, 11:54 AM | #21 |
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Location: Shawnee, Ok
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Re: media blaster question
Got mine at harbor freight, money well spent, but you need to keep the damn water out.
Get a small shop vac to hook up to it, keeps the dust down so you can see.
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Keith Shawnee OK '31 SW 160-B |
06-18-2015, 11:56 AM | #22 |
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Re: media blaster question
the compressor size goes hand in hand with the tank volume...
for a blast cabinent both need to be large |
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06-18-2015, 03:58 PM | #23 |
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Join Date: Jun 2011
Location: Westchester County, NY
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Re: media blaster question
Let's say I go with one of these:
http://www.harborfreight.com/abrasiv...net-68893.html and then pick up a shop vacuum that I can pipe to outside of the garage with an extra long hose (so the dust is drawn OUTSIDE of my work space). (YES, I ADMIT I DON'T CURRENTLY OWN A SHOP VAC). MikeK mentioned 3X the air flow (which I assume is a function of the shop vac) and other folks mentioned the potential need for extra air. What size compressor would I want? (YES, I ADMIT I DON'T CURRENTLY OWN A COMPRESSOR). Thanks, Seth |
06-18-2015, 04:07 PM | #24 | |
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Location: Pottstown, PA
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Re: media blaster question
Quote:
Air compressors are rated in CFM (cubic feet per minute). Air tools are rated for the CFM they require. Blast cabinets are rarely rated, and consume a large amount of air. If the air compressor ain't up to the job, the air pressure drops and your blasting ability decreases. So normally you learn real quick how long you can blast and to wait for the compressor to build back up. For a home once in a while blasting setup this is not bad. I have a larger Devilbis and was surprised that it cannot keep up with my bench top blast cabinet. On a side note, glass bead is great for stripping the finish off of wood. Slow and low, no erosion of the wood. |
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06-18-2015, 04:41 PM | #25 |
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Location: Bucks County, PA
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Re: media blaster question
here are some nice package deals and be done with it...
http://www.tptools.com/Sandblast-Cab...-Packages.html look at it as an investment |
06-18-2015, 05:13 PM | #26 |
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Join Date: May 2010
Location: Ottumwa, IA
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Re: media blaster question
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Highly recommend the TP Tools machine. Tips last long time. I buy my normal use glass beads at Northern Tool 50 lb bag for $9. Have finer in bucket if needed....Also walnut shells for wood or very fine work. Easy to interchange back and forth and store in sealed bucket. Here are some pics. |
06-18-2015, 11:08 PM | #27 |
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Join Date: Mar 2012
Location: Addison,ll.
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Re: media blaster question
When picking out a cabinet, try and buy one with side door as well as front lift door. You can then construct an extension either of wood or sheet metal and attach it to your cabinet for longer items such as steering columns or axles. Cabinetsof 36 inch length seemto be the most available. Cabinets with a fluorescent fixture which shines from top also use a plastic sheet and needs changing at times.
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06-19-2015, 06:51 AM | #28 |
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Re: media blaster question
Both of my cabinets also have the squirrel cage fan for the exhaust. My small Dayton cabinet is in the basement and exhausts into a large cloth bag. This works well, but some of the fine dust escapes the bag and cabinet. My large homemade cabinet is in the garage and exhausts to the outside. I made that cabinet so the 4 foot fluorescent light sets on top of a large clear panel. This way the light itself is outside the cabinet and safe from blasting.
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06-19-2015, 08:55 AM | #29 |
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Join Date: May 2010
Location: Eastern CT
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Re: media blaster question
For 25 years I had a two stage compressor, and it finally quit. I went shopping for a new compressor, and found that all 2 stage units had a 5 horse motor, and my shop cannot supply enough power for 5 horse, so I bought a 3 horse single stage unit from Lowes. I was suprised to find that it did better with the blast cabinet, and actually shuts off while blasting, while the old machine needed rest time. So CFM is more important than horse power.
My blaster is hooked to a vacuum that is upstairs in the barn, where I dont need to listen to it, and vents to the outside. It works for me. |
06-19-2015, 09:34 AM | #30 |
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Re: media blaster question
I don't know which is worse to do, sandblasting, with all the (for me) preparations and mess or wire brushing with my huge and heavy old angle grinder with a 9" wire wheel. With the sand blasting, I do out on the cement pad on a dry day. No Cabinet! And the sand particles break down into a fine dust that gets in everywhere. It requires my compressor to run almost continually. The ceramic nozzles are long ago worn out and expensive to replace, so Turned them out of 1/2' S.S. rod. It works, not great, but it works. The Wire wheel is heavy and tiring and shoots loose wires all over, but I think it's faster than the sand. In Feb., I happened to brush my left knee and instantly ruined a good pair of pants and gouged about 1 1/2" of muscle and skin, maybe 1/4" deep into my upper leg. So, each method has it's pitfalls. The problem is, I'm not planning to do anymore cars after this. I'm just days away from my 71st birthday and restoring cars is just too much work, so I've tried to do everything in a cheap and dirty way, rather than build a full size blast room.
Terry |
06-19-2015, 09:57 AM | #31 |
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Location: Austin
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Re: media blaster question
Why do you guys use glass instead of sand?
Because I am limitied with space...I buy the play sand from Repot Depot and sift it; because it has some larger pieces of sand that stop up the gun. Then I just go outside and blast all my parts and the sand goes into the grass/yard. I wear googles and a mask. I hang a bucket of sand in the tree, gravity feeding the line going down to the hopper on the gun. I modified this gun: http://www.harborfreight.com/21-oz-h...gun-95793.html Drilled out the hole from the hopper to the gun at max size, I think it was 1/4". Have a 6 HP air compressor. Finally, I set up a high volume fan behind me to blow the sand, dust and mosquitos off me. Pepe |
06-19-2015, 11:23 AM | #32 | |
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Re: media blaster question
Quote:
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06-19-2015, 02:04 PM | #33 | |
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Re: media blaster question
Tom, I think maybe the question involving "glass" wasn't referring to the coal slag that you'r talking about, but the ground glass "beads" that we used to use at the airport. It was actual glass and the cost then was about $35 a bag. I didn't like it because the glass dulled too quickly. it did an OK job.
Terry Quote:
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06-19-2015, 02:50 PM | #34 |
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Location: South East NJ
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Re: media blaster question
After a gazillion hours with my bead booth.
I lucked into a 1946 vintage compressor (still made today) with a 60's Ajax real 5HP (take 22amps at 220V). Paid $300 from craigslist. The caps on top the cylinder were loose and leaky so it was not putting out enough air. Catches up with by TP Tools booth so it makes plenty of air. As mentioned. Do not bother with ceramic nozzles- a complete waste. Get carbide. The older vacuums for the TP cabinets had the motor exposed to the dust at the one end. The bearing will go bad. If you put the HEPA conversion kit it will prevent it from happening. I added an extra light. You can never have enough light in there. You would be surprised at how many places you miss when the inner glass protector is a little hazy and you do not have the light right. Get plenty of extra glass protectors. I have a 960 cabinet. A decent size, but some parts do not fit. I drilled a 3/4" hole in the door so I could do brake rods. At one time I did a temp card board extender with some duct tape for a part. I am tall and added a 10 box on the bottom so it is more comfy. Recycled glass is a decent cut. You will find you need different stuff depending. You can cut down the time in the booth with electrolytic rust removal for some parts like wheels or heavy rust removal. This saves electric too. |
06-19-2015, 10:55 PM | #35 |
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Re: media blaster question
Home Shop;
How much room do you have? How much money do you have to spend? How much will you use it? You can build a water trap out of a 5 gal bucket for the dust. How much can you sell it for when your done?
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