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craigthewelder
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A good project very nicely done. I'm not sure if blasting a cordless drill is a great idea..
I've just about finished the cabinet (had a break as we've had a baby between the last update and now 
), i'm just sorting the last couple of touches and then hopefully i'll be able to give it a whirl over the weekend
I've just utilised an old Peugeot 205 8v airfilter to allow air to escape from the cabinet without blowing blast media everywhere
I've dumped the filter housing in my elecrolysis tank to derust it and once thats done i'll weld it to the tank before giving it all a coat of paint.
and as a final touch i've added a small shaving light to the inside so that i can see what the hell i'm doing in there
oh and to presrve the persex window i've bought some clear florists cellophane off ebay of about £5 so that i can put a sheet infront of the perspex so that it takes the brunt of any rebounding media
thats about it, one sandblasting cabinet for less than £50
), i'm just sorting the last couple of touches and then hopefully i'll be able to give it a whirl over the weekendI've just utilised an old Peugeot 205 8v airfilter to allow air to escape from the cabinet without blowing blast media everywhere
I've dumped the filter housing in my elecrolysis tank to derust it and once thats done i'll weld it to the tank before giving it all a coat of paint.
and as a final touch i've added a small shaving light to the inside so that i can see what the hell i'm doing in there
oh and to presrve the persex window i've bought some clear florists cellophane off ebay of about £5 so that i can put a sheet infront of the perspex so that it takes the brunt of any rebounding media
thats about it, one sandblasting cabinet for less than £50
rtbcomp
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Very good & congrats on the baby!
On mine I was going to install the cellophane roll at the top of the window, outside the cabinet, and run the cellophane down the inside and back out at the bottom. The idea being that when the cellophane becomes opaque you can just pull it down to expose a clear section.
In the end I didn't bother as I only use the cabinet for bead blasting and that doesn't scratch the glass at all.
If you find cellophane doesn't last, this stuff may be better
http://www.care4books.com/packaging/page.asp?type=cat&pid=2&cid=1
Make sure you get the smooth finish though, it's the same stuff document wallets are made out of.
On mine I was going to install the cellophane roll at the top of the window, outside the cabinet, and run the cellophane down the inside and back out at the bottom. The idea being that when the cellophane becomes opaque you can just pull it down to expose a clear section.
In the end I didn't bother as I only use the cabinet for bead blasting and that doesn't scratch the glass at all.
If you find cellophane doesn't last, this stuff may be better
http://www.care4books.com/packaging/page.asp?type=cat&pid=2&cid=1
Make sure you get the smooth finish though, it's the same stuff document wallets are made out of.
right i need a bit of advice
the cabnet works well kind of i'm having realy problems with visibility when blasting anything. I've fitted the air filter and vacuum extractor as pictured above however it doesn't really seem to be doing much after a few minutes.
I think the problem might be that the blasted grit is just sitting in the bottom of the drum and getting blown round by the compressed air. I'm thinking therefore i could probably do with making a sloped bottom for the drum so that the grit will be drawn to the bottom centre of the drum and i can then have it fall out the bottom of the into a sealed container or such. However i'm not sure what to do about the vacuum location i don't know whether its better to remove teh filte ri have currently in place and instead have a T take off under the drum so that as the git fall s down the pwdery stuf is sucked out leaving only the heavier grit to fall into the container to be reused.
thoughts??
oh and what psi are most people blasting at?? i don't know if my psi is too high which could also be contributing to the problem
the cabnet works well kind of
i'm having realy problems with visibility when blasting anything. I've fitted the air filter and vacuum extractor as pictured above however it doesn't really seem to be doing much after a few minutes.I think the problem might be that the blasted grit is just sitting in the bottom of the drum and getting blown round by the compressed air. I'm thinking therefore i could probably do with making a sloped bottom for the drum so that the grit will be drawn to the bottom centre of the drum and i can then have it fall out the bottom of the into a sealed container or such. However i'm not sure what to do about the vacuum location i don't know whether its better to remove teh filte ri have currently in place and instead have a T take off under the drum so that as the git fall s down the pwdery stuf is sucked out leaving only the heavier grit to fall into the container to be reused.
thoughts??
oh and what psi are most people blasting at?? i don't know if my psi is too high which could also be contributing to the problem
brightspark
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what i have is a mesh grid for the floor with media below. what ive done is lay a rubber mat over it leaving the edges open so that the gun cannot desturb the media below but lets the spent media fall through .the filter is quite high up with a large suction fan with 4inch ducting to outside .gun pressure is as much as comp can suply 90 psi constant
rtbcomp
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You could make sure the airflow is as high as possible by having an opening in the cabinet opposite the port to the extractor.
If you make an exit chute leave it open so that the grit falls into a bucket and air will be drawn into the drum through that. Just make sure the bucket doesn't overflow, and of course you'll have to extend the pickup pipe into the bucket if you use a siphon gun.
If you make an exit chute leave it open so that the grit falls into a bucket and air will be drawn into the drum through that. Just make sure the bucket doesn't overflow, and of course you'll have to extend the pickup pipe into the bucket if you use a siphon gun.
