dkmc
Well-known member
Your media looks like glass beads? If you're over 70-80 psi with glass beads they will turn to dust pretty quickly
The Abrasive Blasting Resource Thread
- Thread starter OccupantRJ
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I didn't know that, I'll turn it down, Thank you.
dkmc
Well-known member
You could try the window screen trick. Install a window screen with frame inside with standoffs that hold it 3/4 to 1" away from the inside of the glass. Greatly reduces frosting of the protectors.
pelletman
Well-known member
I just picked up a 42 x 24 Trinco cabinet and I need a glove, I asked them how much and this was the response. Seems pretty reasonable and it has nice gloves in it
The standard rubber gloves are only sold in a pair, but we do offer a neoprene glove. One won't be better than the other, it's just a preference!
2-00047 6X24 Rubber Gloves $23/pair
2-00048 6X24 Noeprene $23/pair (lined)
2-00140 6x24 left hand neoprene $12 each
The standard rubber gloves are only sold in a pair, but we do offer a neoprene glove. One won't be better than the other, it's just a preference!
2-00047 6X24 Rubber Gloves $23/pair
2-00048 6X24 Noeprene $23/pair (lined)
2-00140 6x24 left hand neoprene $12 each
dkmc
Well-known member
Be sure they're long enough but those prices seem very fair.
nitroracer20
Well-known member
Hey fellas.
I finally got my blast cabinet online. Its working great with some coal slag i inherited with the compressor and cabinet. Happy with the air supply of compressor, i was concerned about that. Im hoping yall can guide me and make sure im in the right direction.
I have my skat blast dust extractor hooked up to the outlet side by the electrical j box (pic 1). In pic 2, the previous owner just had a rag stuffed into what i presume the air intake side is. I left it there and everything worked ok.
I have a ton of vacuum like this. My Gloves baloon up, side door has big suction with the dust extractor on and i cant open it unlatched.
Should this air intake be left open without the rag? Add a “soffet vent” where the rag is?
Anyways having fun and learning on its first use. Compressor cycled on twice maybe while blasting that c clamp. Compressor measured out to 21+ CFM when i timed it. Im running 90 PSI. the trigger gun really *****. I see why everyone uses a foot pedal. Especially with the vacuum blowing up my gloves. Maneuvering the gun is tough.
Inputs appreciated!!!
I finally got my blast cabinet online. Its working great with some coal slag i inherited with the compressor and cabinet. Happy with the air supply of compressor, i was concerned about that. Im hoping yall can guide me and make sure im in the right direction.
I have my skat blast dust extractor hooked up to the outlet side by the electrical j box (pic 1). In pic 2, the previous owner just had a rag stuffed into what i presume the air intake side is. I left it there and everything worked ok.
I have a ton of vacuum like this. My Gloves baloon up, side door has big suction with the dust extractor on and i cant open it unlatched.
Should this air intake be left open without the rag? Add a “soffet vent” where the rag is?
Anyways having fun and learning on its first use. Compressor cycled on twice maybe while blasting that c clamp. Compressor measured out to 21+ CFM when i timed it. Im running 90 PSI. the trigger gun really *****. I see why everyone uses a foot pedal. Especially with the vacuum blowing up my gloves. Maneuvering the gun is tough.
Inputs appreciated!!!
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dkmc
Well-known member
You need airflow thru the cabinet to evacuate the dust and dirt. A sheet metal cover attached with 1 screw that can be pivoted over that hole to adjust air intake would help you fine tune the process. Blowing up the gloves sounds like you need more air flow. It also seems like just allowing full flow thru the open hole will do no harm.
JHForman
Well-known member
Ok im gonna post here since my thread didnt get any traction. Looking for some help. I have an allsource 42000 cabinet, its a pressure cabinet. I am using glass beads in it. The blasting part works incredibly well, its the dust collection part im having issues with. The unit has 2 reclaimers on it(like the harbor freight ones). is whats happening is basically every bit of dust(and media) it pulls out of the cabinet gets blown into my shop. I cant work like this and its pointless to try. I was reading the above post and like his my gloves blow up and you cant open the door on the cabinet when the collectors are on. I have ordered a TIP tools vac-55 HEPA for the cabinet, the ones that are on it are great of keeping the cabinet visible but do nothing to contain dust. is something wrong with these reclaimers/collectors?
dkmc
Well-known member
Sounds like you have multiple issues going on. When gloves inflate it indicates high vacuum in the cabinet. There needs to be enough square inches of inlet area for air flow thru the cabinet. Maybe you don't need 2 "reclaimers" and just 1 would be enough? Dust blowing into the shop means filters are not working. Maybe post some pics of the setup?
JHForman
Well-known member
theres one on each side. it came this way from allsource. I have not modified anything. I cleaned the filters throughly when I got it, so not sure why its still blowing all the dust into the shop. I did buy it used.
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JHForman
Well-known member
Ill quote myself here, I removed both the dust collectors that came with the cabinet(extremely loud/annoying anyways), and replaced the 2 with 1 dust collector from TP tools(vac-55 is the model I got), its super quiet, and works great! I can actually hear my radio while I work now. I blasted for almost 3 hours the other night and no dust in my shop. I am happy with the decision to buy it.
dkmc
Well-known member
I picked up another pressure pot cabinet. It's an Abrasive Blast Systems brand unit, 48 x 48 x 36 high.
PO couldn't get it to work right, ended up drilling out the orifice plate in the bottom of the pot from 1/8" to 1/2 inch and
now it just shoots a steady stream of abrasive out of the nozzle. Pulse valves to clean collector bags not operational so the bags are
probably fully clogged at this point as well. Needs tinkering and a tune up, should be OK.
PO couldn't get it to work right, ended up drilling out the orifice plate in the bottom of the pot from 1/8" to 1/2 inch and
now it just shoots a steady stream of abrasive out of the nozzle. Pulse valves to clean collector bags not operational so the bags are
probably fully clogged at this point as well. Needs tinkering and a tune up, should be OK.
That's a biggin. Nice find.I picked up another pressure pot cabinet. It's an Abrasive Blast Systems brand unit, 48 x 48 x 36 high.
PO couldn't get it to work right, ended up drilling out the orifice plate in the bottom of the pot from 1/8" to 1/2 inch and
now it just shoots a steady stream of abrasive out of the nozzle. Pulse valves to clean collector bags not operational so the bags are
probably fully clogged at this point as well. Needs tinkering and a tune up, should be OK.
JHForman
Well-known member
Ok guys help me out here, I seem to have the dust not getting in my shop problem fixed. but what seems to be happening is my dust collector is also pulling my media out of my cabinet, is there anything I can do to stop this from happening?
maybe all the stuff laying in the bottom of my collector is the heavy stuff, and the dust is being collected by the filter? IDK ill play with it more this week but just looking for some input.
maybe all the stuff laying in the bottom of my collector is the heavy stuff, and the dust is being collected by the filter? IDK ill play with it more this week but just looking for some input.
I bent a sheet metal box with one open end that I siliconed over the outlet. I then cut and fit a piece of this fibrous filter material and slid it in the box. It seems to slow the larger particles down enough that they don't just get sucked out of the cabinet.
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JHForman
Well-known member
thank you for that !! ill give that a go next!!
dkmc
Well-known member
More work on the ABS cabinet/system...
I was glad to see the cartridge filters instead of filter bags. I took the Asco pulse valve and the remote actuator
apart, couldn't really find anything wrong. The design of these parts is pretty simple.
Put it back together and now the filter pulse cleaning works. I suspect the piston in the remote actuator
was just a bit stuck and taking it apart freed it up. Progress!
I was glad to see the cartridge filters instead of filter bags. I took the Asco pulse valve and the remote actuator
apart, couldn't really find anything wrong. The design of these parts is pretty simple.
Put it back together and now the filter pulse cleaning works. I suspect the piston in the remote actuator
was just a bit stuck and taking it apart freed it up. Progress!
dkmc
Well-known member
This fitting is supposed to increase pressure pot blasting efficiency by 30-40%. Huge!
The fitting has internal shape that makes the air spin or rotate in a spiral manner.
The fitting costs about $525
The fitting has internal shape that makes the air spin or rotate in a spiral manner.
The fitting costs about $525
Farrow Flow - Home of The Farrow Flow Insert
The patented Farrow Flow® insert is designed to improve your existing dry blast system. When inserted into the airline, the air is directed in a helical pattern creating a vortex which picks up the media creating an optimal mix at the end of the nozzle giving you a 25% or more wider spread.
farrowflow.com
Is it a wear part?
dkmc
Well-known member
Shouldn't be. They install it in the air supply line before the T in the bottom of the pot. With that kind of increase
in efficiency, I am going to experiment with a twisted metal insert or fitting with internal angled vanes, worth spending some time
trying out some DIY designs.
dkmc
Well-known member
Can be all over the map from $150 to 2500
Seller wants it gone, said $1 and get it out of his space. It's in my home state of Texas but still an 8 hour drive each way.
dkmc
Well-known member
Rules of the universe: The better the deal, the longer the distance.
AceofSpad3s
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- Oct 1, 2014
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I'm not seriously shopping for equipment right now, but I am wondering, what is the minimum viable compressor to do any sand blasting? Not ideally, not quickly but the ragged edge of tolerable, perhaps a medium size hand plane body from rusty to clean in 20-30 minutes?
You will hear that you need a minimum compressor (typically 5hp 60 gallon, though others will claim you need a 7.5hp 80 gallon etc. ) to effectively blast, but the reality is you can blast with a smaller compressor, you just may not be able to move as quickly, and you may have to wait for the compressor to catch up.
Also, you can modulate how much air you consume by your choice of gun. Here's a link to a very popular aftermarket gun, and you'll notice you can choose small, medium, or large (which actually refers to the combination of jet and tip installed). The small gun is spec'd for 4 - 8 cfm which is obtainable with a 120 volt oilless compressor. Granted, the tank size will also come in to play, but it is possible.
My first setup used a 120 volt, "2hp", 26 gallon quincy that made about 7ish cfm and I blasted a lot of stuff in my little harbor freight benchtop cabinet.
Now mark my words, someone is going to pop in here and not read this or any other replies and say you need a giant compressor to do any blasting, and you can cheat physics, etc. but just remember, it's all relative.
Good luck.
Also, you can modulate how much air you consume by your choice of gun. Here's a link to a very popular aftermarket gun, and you'll notice you can choose small, medium, or large (which actually refers to the combination of jet and tip installed). The small gun is spec'd for 4 - 8 cfm which is obtainable with a 120 volt oilless compressor. Granted, the tank size will also come in to play, but it is possible.
My first setup used a 120 volt, "2hp", 26 gallon quincy that made about 7ish cfm and I blasted a lot of stuff in my little harbor freight benchtop cabinet.
Now mark my words, someone is going to pop in here and not read this or any other replies and say you need a giant compressor to do any blasting, and you can cheat physics, etc. but just remember, it's all relative.
Good luck.
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dkmc
Well-known member
I don't have to read post #987 to tell you I would say 350-500 CFM (100-150 horsepower) is about right, diminishing returns below that. But reality wise, to spend 20-30 minutes to clean a hand plane, you could probably do it with 3 real horsepower (real as opposed to the over-rating of most of the retail compressors these days). I'm going to bet to take that long to do that small of an area, you will tire of the slow performance quickly. You can use a Q tip to paint your house if you want. To feel like you're actually making some sort of progress on small parts, 5hp (20 CFM) is probably the bottom end compressor wise.
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AceofSpad3s
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The biggest jump in capability is from nothing to something and sometimes that's enough to make the difference. I have a pancake and maybe used the brad nailer half a decade ago since I'm not doing remodels anymore, I don't really use air tools so it's hard sell to buy a gigantic compressor. If I could get into the capability to clean my junk $2 tools and whatever else for $500-$700 instead of $1500 it's easier to preform the mental gymnastics to justify it. I'm not actively looking at doing anything soon so I might develop the need in the next year for more capability, but I'm just curious as to what the floor is cost wise for my realistically limited use case.
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txvwnut
Well-known member
I started with a 5hp single stage and a bench top cabinet. If it was a long blasting session you’d have to let the compressor catch up to you. I’m now running a 5hp two stage compressor with 20cfm and it keeps up with my Skat-blast gun setup in my HF cabinet easy peasy.
I have a lot of time (for someone that does this as a hobby) in front of siphon glass bead cabinets.
I have done a lot with 5hp motors and good compressors such as Kellog, Curtis, and Quincy QR 325. When blasting your compressor will run most all the time.
I run a Quincy air dryer that handle’s around 40cfm and filters.
I can usually blast as long as I want to with this setup.
My nozzle in my cabinet is about 3/16 inch.
One of my older set ups had a 175 cfm diesel and a large air dryer. It was nice but not worth it for what I did. If I did this every day that would be the way to go.
60 to 80 gallon tanks are fine.
This being said I could not imagine blasting off a 10cfm compressor as I don’t think you would have enough pressure to force the media out.
A compressor's flow capacity has nothing to do with the pressure available to "force the media out".
dkmc
Well-known member
Curious what they are asking? What engine is that? It's a beast. I had an IR 600 years ago, Detroit 6-71
Gardner Denver 365 CFM Diesel Air Compressor - tools - by owner - sale
Gardner Denver 365 CFM Diesel Air Compressor. Not running Caterpillar Pony GAS start Engine & Caterpillar Diesel engine Steel wheels Guessing 1950's???? $5000 CASH
albuquerque.craigslist.org
dkmc
Well-known member
Wow.......sticker shock!Gardner Denver 365 CFM Diesel Air Compressor - tools - by owner - sale
Gardner Denver 365 CFM Diesel Air Compressor. Not running Caterpillar Pony GAS start Engine & Caterpillar Diesel engine Steel wheels Guessing 1950's???? $5000 CASHalbuquerque.craigslist.org
Land is being sold, it needs to go, OBO.
Good Point.
Did not come across like I meant.
Basically trying to simplify it by saying that the smaller compressors that we all see in the big box stores I would say are not sufficient for this. They will be at a low pressure shortly after you hit the pedal to start blasting.
When the air pressure drops low the media tends to not be forced out and basically falls out of the nozzle without sufficient force to clean a part.
I think I kind of, sort of, understand what you're getting at, but I think most people here reading about blasting understand the basic principles involved, including the concept of a pressure regulator. When you and everyone else here talks about a compressor not being able to "keep up" with a blaster, they mean that the compressor cannot compress air into the tank fast enough to maintain the regulated pressure at which the gun is being operated.
I assume anyone desiring to blast understands that the gun will perform optimally at the desired (regulated) pressure, and suboptimally at any pressure below that. What you said is that you can't imagine a 10cfm compressor having enough pressure to effectively blast, which is incorrect and the source of a lot discouragement regarding blasting on GJ. A 10 cfm compressor will blast just as well as a 20 or 30 cfm compressor as long as the gun is operating at the desired regulate input pressure. The only thing that changes is how long one can blast before they fall off the reg. The OP understands they will not be able to blast constantly, and they know it will be slower, but they're also not trying to blast a vehicle frame, they're trying to blast a hand plane, which is a very reasonable and achievable goal for a suboptimal compressor.
I assume anyone desiring to blast understands that the gun will perform optimally at the desired (regulated) pressure, and suboptimally at any pressure below that. What you said is that you can't imagine a 10cfm compressor having enough pressure to effectively blast, which is incorrect and the source of a lot discouragement regarding blasting on GJ. A 10 cfm compressor will blast just as well as a 20 or 30 cfm compressor as long as the gun is operating at the desired regulate input pressure. The only thing that changes is how long one can blast before they fall off the reg. The OP understands they will not be able to blast constantly, and they know it will be slower, but they're also not trying to blast a vehicle frame, they're trying to blast a hand plane, which is a very reasonable and achievable goal for a suboptimal compressor.
Your points are valid.
With that said I do think there is a minimum size compressor needed realitive to the cabinet size. For example my 2.5 gallon portable compressor would not be enough to have a meaningful effect on blasting a part.
It takes a little time for the siphon to do its trick and flow the media correctly once your hit the pedal.
I have also never used a small cabinet such as the HF one and don’t know the size requirement for that cabinet.
I would assume any hobby person wanting to blast would find the cabinet the cheapest of the 2 items to buy (compressor being more expensive).
Not trying to discourage anyone from trying.
A person should Buy a cabinet and see if your compressor will work it. If not. Upsize the compressor as well.