oldman_pottering
Well-known member
good to know, thanks
There's no way I would have guessed plexiglass would have lasted so long
The Abrasive Blasting Resource Thread
- Thread starter OccupantRJ
- Start date
There's no way I would have guessed plexiglass would have lasted so long
OP
OccupantRJ
Well-known member
I feel that the size of my larger cabinet has something to do with the plexiglass life by the design of the air intake and distance the gun is away from the window. Here is my son blasting with it. The window is oval and has a series of holes on the rim to bolt it in place. I just lay it on the new piece to act as a drilling guide for holes in the new window. It is not enough effort for me to redesign the attachment.
OP
OccupantRJ
Well-known member
Note the rectangular opening at the top of the window area. This allows intake air to wash over the window to act as an air curtain. The blower is a high velocity 4 inch, so it moves a lot of air. Also note the sign about not pointing the gun at the glass.
oldman_pottering
Well-known member
that thing makes mine look like a toy !I feel that the size of my larger cabinet has something to do with the plexiglass life by the design of the air intake and distance the gun is away from the window. Here is my son blasting with it. The window is oval and has a series of holes on the rim to bolt it in place. I just lay it on the new piece to act as a drilling guide for holes in the new window. It is not enough effort for me to redesign the attachment.
OP
OccupantRJ
Well-known member
This is the thread on my smaller cabinet that I use glass beads in.
Blast cabinet refurbish
My bead blast cabinet went underwater for several days in a flood 12 years ago, and afterwards, due to priorities of life, it had to be put in storage in a semi trailer I own, for an eventual move. It sat in the trailer untouched for several years, then my BIL borrowed it until recently, when...
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I use aluminum oxide in the larger cabinet. Here is the story on it.
Mongo Blasting Cabinet
This is a suction type blasting cabinet I bought from my salvage yard friend years ago and restored right before my shop was flooded out. I paid $150 for the unit, with the promise that I would repair it and get it in operation. The main cabinet was stored on it's door in a low spot in a...
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oldman_pottering
Well-known member
Thanks mateThis is the thread on my smaller cabinet that I use glass beads in.
Blast cabinet refurbish
My bead blast cabinet went underwater for several days in a flood 12 years ago, and afterwards, due to priorities of life, it had to be put in storage in a semi trailer I own, for an eventual move. It sat in the trailer untouched for several years, then my BIL borrowed it until recently, when...
I use aluminum oxide in the larger cabinet. Here is the story on it.
Mongo Blasting Cabinet
This is a suction type blasting cabinet I bought from my salvage yard friend years ago and restored right before my shop was flooded out. I paid $150 for the unit, with the promise that I would repair it and get it in operation. The main cabinet was stored on it's door in a low spot in a...
dkmc
Well-known member
Hello fellow blasters and Quincy trust members. At the tractor show today I ran onto an odd setup. It's a Quincy 216, 3 Point mount, and PTO driven with the PTO shaft running thru the middle of the small air storage tank. At first I thought it was a home-brew rig. But then I saw the ID tag. Made by Friend manufacturing, Gasport, NY. Yes the price is $150. Pretty cool, very different.
dkmc
Well-known member
I've spent a little time lately investigating and researching the viability of making Crushed Glass media from bottles for use
as blasting media. So far I picked up a small Troy Built chipper for $50, and ran a few bottles thru it, then sifted the result.
Crushed glass is supposed to be much more aggressive than glass beads. Next is finding a source of empty bottles.
The price of crushed glass is up there, and the shipping on it is really high. I'm experimenting to see if a DIY approach
could result in a worth while cost savings.
The Chipper, had no idea if it would even work, or instantly self destruct. Turns out it does a great job with no effort.
As it comes out the chute
The paper and large chunks separated.
With the major paper and chunks removed
The ^^above^^ on top of the 12 mesh screen
The 12 mesh that passed thru
12 mesh on top of the 120 screen
The 120 (and finer) that passed thru. Box cutter for size perspective.
This is the size that I will try in the cabinet once I get more bottles.
All the more course mesh media will get re-run thru the chipper till it's all 120.
as blasting media. So far I picked up a small Troy Built chipper for $50, and ran a few bottles thru it, then sifted the result.
Crushed glass is supposed to be much more aggressive than glass beads. Next is finding a source of empty bottles.
The price of crushed glass is up there, and the shipping on it is really high. I'm experimenting to see if a DIY approach
could result in a worth while cost savings.
The Chipper, had no idea if it would even work, or instantly self destruct. Turns out it does a great job with no effort.
As it comes out the chute
The paper and large chunks separated.
With the major paper and chunks removed
The ^^above^^ on top of the 12 mesh screen
The 12 mesh that passed thru
12 mesh on top of the 120 screen
The 120 (and finer) that passed thru. Box cutter for size perspective.
This is the size that I will try in the cabinet once I get more bottles.
All the more course mesh media will get re-run thru the chipper till it's all 120.
Did you buy it?Hello fellow blasters and Quincy trust members. At the tractor show today I ran onto an odd setup. It's a Quincy 216, 3 Point mount, and PTO driven with the PTO shaft running thru the middle of the small air storage tank. At first I thought it was a home-brew rig. But then I saw the ID tag. Made by Friend manufacturing, Gasport, NY. Yes the price is $150. Pretty cool, very different.
dkmc
Well-known member
Thinking about it. It has some less than desirable design flaws that probably make it very limited in usefulness.
OP
OccupantRJ
Well-known member
Sandblast cabinet does not work.
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Sand blast cabinet doesn't work
I bought a used Harbor freight sand blast cabinet and can't figure out why I won't draw sand. I installed a metering valve and have plenty of air but it's a no go. Any suggestions as to what to check? Thanks, Jim
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OP
OccupantRJ
Well-known member
I worked in a small engine shop right out of high school in 1970. One of our vendors brought a parking lot blower by to get us to start selling. The selling point was to drop a glass bottle into it to make an impression.I've spent a little time lately investigating and researching the viability of making Crushed Glass media from bottles for use
as blasting media. So far I picked up a small Troy Built chipper for $50, and ran a few bottles thru it, then sifted the result.
Crushed glass is supposed to be much more aggressive than glass beads. Next is finding a source of empty bottles.
The price of crushed glass is up there, and the shipping on it is really high. I'm experimenting to see if a DIY approach
could result in a worth while cost savings.
The Chipper, had no idea if it would even work, or instantly self destruct. Turns out it does a great job with no effort.
As it comes out the chute
The paper and large chunks separated.
With the major paper and chunks removed
The ^^above^^ on top of the 12 mesh screen
The 12 mesh that passed thru
12 mesh on top of the 120 screen
The 120 (and finer) that passed thru. Box cutter for size perspective.
This is the size that I will try in the cabinet once I get more bottles.
All the more course mesh media will get re-run thru the chipper till it's all 120.
dkmc
Well-known member
That PTO rig with the Quincy compressor seems like it's designed poorly. The 216 pump is a minimum of 400 rpm. The way the unit is set up, with a 540 rpm PTO speed, and the pulley arrangement, the pump would probably turn less than 400 rpm, maybe only like 230-240 rpm. At 900 rpm max operating speed, the output would be about 10 CFM. So the way it is setup, it's very limited on CFM output. And also might not turn fast enough to sling oil inside the pump for adequate lubrication. I wonder how many the Friend company actually sold?
TriumphFan
Well-known member
This might be a stupid question but here goes. I am using a cyclone in line with my shop vac. Can I reuse what ends up in the bucket underneath the cyclone or is that trash?
dkmc
Well-known member
You can use the cyclone as a reclaimer, yes. Probably need to sift the media first.
OP
OccupantRJ
Well-known member
Kitchen sifters from the utensils aisle of a grocery store or Walmart work fine. They are available in several sizes and frame material.
dkmc
Well-known member
Quincy 325 + 5hp 1ph motor for $75 !
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Quincy 325 on Marketplace
NOT MINE Syracuse, NY How is this gem still for sale after a week? 5hp 1ph motor and 325 pump for $75! https://www.facebook.com/share/sbCznSKgm1e78b7e/
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dkmc
Well-known member
Wow is that a Quincy pump? Never saw one that big, and 6? cylinders?
Most folks would go buy a screw for less money, but someone did serious work on that setup.
Looks like oil well cobbing work, bet it moves some air.
dkmc
Well-known member
Just noticed the tiny air filters on the big Quincy.
Wow choked down.
Wow choked down.
dkmc
Well-known member
Kinda quiet on this thread. Last month I picked up a sifter to go along with my crushed glass media experiments.
It was only $55, but a 250 mile round trip to retrieve. Did a brief try-out with it before the weather took a dump.
it works pretty slick, has 3 levels of particle separation.
Had to wash it all out, it was used for sifting sugar in a candy factory.
It was only $55, but a 250 mile round trip to retrieve. Did a brief try-out with it before the weather took a dump.
it works pretty slick, has 3 levels of particle separation.
Had to wash it all out, it was used for sifting sugar in a candy factory.
OP
OccupantRJ
Well-known member
Run with the big boys or stay on the porch, huh? Does this make you a sifty character?Kinda quiet on this thread. Last month I picked up a sifter to go along with my crushed glass media experiments.
It was only $55, but a 250 mile round trip to retrieve. Did a brief try-out with it before the weather took a dump.
it works pretty slick, has 3 levels of particle separation.
Had to wash it all out, it was used for sifting sugar in a candy factory.
dkmc
Well-known member
I've always been shifty, now I able to be sifty as well.....Run with the big boys or stay on the porch, huh? Does this make you a sifty character?
The seller asked me if I wanted to make an offer. Seller can’t power up.
dkmc
Well-known member
If he asked 2 days ago you could have put it on your list to Santa.
Might have showed up under the tree this morning
larry4406
Well-known member
Details please on this sifter.Kinda quiet on this thread. Last month I picked up a sifter to go along with my crushed glass media experiments.
It was only $55, but a 250 mile round trip to retrieve. Did a brief try-out with it before the weather took a dump.
it works pretty slick, has 3 levels of particle separation.
Had to wash it all out, it was used for sifting sugar in a candy factory.
dkmc
Well-known member
It's a Kason unit. I can't find the exact model in any of their literature.
IRQVET
Well-known member
I have this Black Bull gravity fed blaster, and it's an absolute turd. Can never get this thing to work right, just blows air with little to no media coming out of the gun. I always blast with play sand (yes I know about Silica- and yes I wear a mask) 
At first I thought the sand was wet or something was clogged, but I can't find anything of the sort that would impede its function. One of the worst tool purchases I've made. Think back when I bought it - its rating was 4 out of 5 stars. Now you look them up and it's a solid 3 out of 5 stars.
At first I thought the sand was wet or something was clogged, but I can't find anything of the sort that would impede its function. One of the worst tool purchases I've made. Think back when I bought it - its rating was 4 out of 5 stars. Now you look them up and it's a solid 3 out of 5 stars. What's the media path when it leave the bottom of the tank? Mixing valve?
dkmc
Well-known member
I have this Black Bull gravity fed blaster, and it's an absolute turd. Can never get this thing to work right, just blows air with little to no media coming out of the gun. I always blast with play sand (yes I know about Silica- and yes I wear a mask)
We learn as we go. Probably back in about 1980 my first 'outside pot' blaster was a DIY gravity feed 'turd'. Powered with 2 Bendix-Wabco truck air brake compressors run off of an old 16hp garden tractor. I had about 18? CFM and thought I was all set. Nope! Next step, a 1940's IR 105 CFM portable and DIY pressure pot made from an old forklift propane tank. Much better. I was all set to blast wheels and car frames in the July heat. Fun for a little while....
OP
OccupantRJ
Well-known member
That style abrasive discharge will never make it, as it is like sucking sand through a straw. You need a T under there as a mixing valve. The object is to have an air flow cross ways through the T underneath, then dribble abrasive into it to maintain a steady grit flow. Whatever it takes to make that happen is the process. A ball valve between the tank and the T can act as a grit flow regulator. Look at pictures of more substantial blast pots forI have this Black Bull gravity fed blaster, and it's an absolute turd. Can never get this thing to work right, just blows air with little to no media coming out of the gun. I always blast with play sand (yes I know about Silica- and yes I wear a mask)
ideas.I'd look for a used commercial unit on fb mp, parts will be available etc. Or hire it out?
TriumphFan
Well-known member
I finally got my used pressurized sandblaster working consistently. It helps to play with the mix lever at the bottom of the tank and I replaced the deadman valve with one from Eastwood. It's a messy business though.
I have one of the cheap harbor freight / princess auto ( canadian ) floor model sandblasting cabinets.
I've been doing all the mods over the last few weeks. Just waiting on my triggerless gun to show up.
I'm at the dust extraction stage and I'm wondering if there is any reason not to use the side port for extraction vs the back port . I have the side port baffled. I have a 4.5 hp vac and using 2 inch hose. The hose will be made as short as possible to keep it tidy. Will it still cross flow good to keep visibility alright or is the rear port better.
My concern is if I use the rear port and end up with high suction, the side port won't be large enough to bring in make up air. I can restrict the large hole with a sliding plate. The small hole would need to be made larger or a additional hole.
I've been doing all the mods over the last few weeks. Just waiting on my triggerless gun to show up.
I'm at the dust extraction stage and I'm wondering if there is any reason not to use the side port for extraction vs the back port . I have the side port baffled. I have a 4.5 hp vac and using 2 inch hose. The hose will be made as short as possible to keep it tidy. Will it still cross flow good to keep visibility alright or is the rear port better.
My concern is if I use the rear port and end up with high suction, the side port won't be large enough to bring in make up air. I can restrict the large hole with a sliding plate. The small hole would need to be made larger or a additional hole.
Attachments
Damon L.
Well-known member
I am using the side port for collection and the back for makeup air on mine. Connected to my 2hp dust collector, but I have a dust deputy and 5 gallon pail on the side with 2-1/2" shop vac hose between the cabinet, dust deputy, and DC port. It works fine like this. I do have a baffle over my side port a lot like yours.
So your works fine that way. It evacuates the dist good enough to keep things clear.
I am building a dust separator also , trying the DiY version first before I drop $50 on the real version. My shop vac is a small hose version 1 1/4 inch I believe but I am adapting it to the larger hose as I have it on hand.
I am trying to keep it as compact as possible as garage floor space is at a premium. Lol
Damon L.
Well-known member
Yes. it works very well. I am currently using 80 mesh garnet media, that is quite dusty. I had crushed glass in there before that.
I have 2 different sizes of crushed glass, price was right on torn bags so I ended up with two 5 gallon pails of each size and two 5 gallon pails of copper slag / ebony grit . Now that I have a metering system that will use very little media , I basically have a lifetime supply of media for the amount of blasting I will do. Lol
Each pail holds about 75 pounds worth of media.
My old wooden cabinet that I built over 20 yrs ago was set up as siphon system , never did work right but I didn't have the right siphon tube either from what I have been seeing on the forum. I had the 2 tubes in one and not the stacked tubes. Might have worked better with that.
I converted it to a homemade pot blaster but it was a messy job when using it. Dust was the issue.
I miss the size of that old cabinet being 4ft wide vs this one but I'm not into the same stuff as I use to be.
If this gets busy and I see larger objects all the time then I will definitely build a new cabinet and take what I've learned from this site and build it into the new cabinet.
Now I have a new issue to figure out with my air compressor. May need a new electric motor again . This one is less then 2 yrs old and it seems to be down on power. I had to lower my restart pressure from 100 to 90 psi or the motor just hammers. It's either the start capacitor is failing or weak and then when it hits 100 psi , the motor seems to lug down and slowly increase rpm until the cut out pressure of now 125 instead of 135 due to lowering the start pressure.
I am considering going to a true 5hp motor but then I need to find a new pully to fit the 7/8" shaft. Unless there is enough meat on this pully that I can bore it out to 7/8 and cut a new key way.