Post by rykk on Sept 25, 2012 19:38:24 GMT -5
Hi, all - Thought I might upload some pix of a nifty dust containment and exhaust system I built for under $50.
I've seen WAY too many folks in videos omline not using respirator masks - maybe because they think the water or oil keeps the dust out of their lungs - wrong!! The water or oil actually concentrates the rock dust in an airborne mist. With this rig, you can at least not do near as much damage grinding "maskless". It really works well and I have almost no dust on my bench outside the containment after 6 months of use.
Here's the rig with my Inland lap inside it. The container is just one of those cheap, plastic tubs from Home Depot with a hole cut in the side maybe a foot and a half wide - ~$8 The dark blue hose coming out of the box is just a couple feet of 2" ribbed hose from Ace - like 1 or 2 bucks. There is a 2" PVC fitting that screws together on the side of the plastic tube that you just shove the hose into and it fits tightly enough.
Here's a pic of the suction fan (a 12V bilge blower for a large boat) strapped to the side of my bench. The fan is the dark blue thing just after the PVC fittings. Fan - $18.99 buy it now at ebay, free shipping. PVC - had 'em laying around, maybe $8
Here's the exhaust hose (2 cheap dryer hoses taper together) that carries the dust from the lap out of my garage - ~$6
Here's a pic demonstrating just how much suction this setup generates. (like 800cfm) The clear plastic is just a large zip lock freezer bag cut to lay it out and taped to the plastic tub. It has lasted just fine since they are pretty thick:
And here's a pic of the old 12V, 15A power supply I rescued from the trash at work and fixed a long time ago. This particular fan pulls around 7.3A or so at 12V. You can pick up a 12V, 10A switching power supply much smaller for super cheap on ebay. I put a 20A circuit breaker switch in line with the 120VAC input from a wall socket after this pic was taken. You could just plug the thing in but I'm lazy and the plug is behind my toolbox.
Anyhow, this thing was pretty easy to put together and works like a charm. The bilge blower fan is like 800cfm and moves a serious amount of air. And I no longer have a taste like concrete in my mouth after a nub grinding or cab forming session. You just have to wipe the dust off the inside top of the tub every few days so's you can see what you're doing. To clean out the rig, you just pull out the blue hose, disconnect power to the lap, and unsnap the plastic tub from its lid, take the lap off the lid and take 'em outside and hose 'everything off. Do your lungs a favor and give it a shot!
C-ya,
Rick
I've seen WAY too many folks in videos omline not using respirator masks - maybe because they think the water or oil keeps the dust out of their lungs - wrong!! The water or oil actually concentrates the rock dust in an airborne mist. With this rig, you can at least not do near as much damage grinding "maskless". It really works well and I have almost no dust on my bench outside the containment after 6 months of use.
Here's the rig with my Inland lap inside it. The container is just one of those cheap, plastic tubs from Home Depot with a hole cut in the side maybe a foot and a half wide - ~$8 The dark blue hose coming out of the box is just a couple feet of 2" ribbed hose from Ace - like 1 or 2 bucks. There is a 2" PVC fitting that screws together on the side of the plastic tube that you just shove the hose into and it fits tightly enough.
Here's a pic of the suction fan (a 12V bilge blower for a large boat) strapped to the side of my bench. The fan is the dark blue thing just after the PVC fittings. Fan - $18.99 buy it now at ebay, free shipping. PVC - had 'em laying around, maybe $8
Here's the exhaust hose (2 cheap dryer hoses taper together) that carries the dust from the lap out of my garage - ~$6
Here's a pic demonstrating just how much suction this setup generates. (like 800cfm) The clear plastic is just a large zip lock freezer bag cut to lay it out and taped to the plastic tub. It has lasted just fine since they are pretty thick:
And here's a pic of the old 12V, 15A power supply I rescued from the trash at work and fixed a long time ago. This particular fan pulls around 7.3A or so at 12V. You can pick up a 12V, 10A switching power supply much smaller for super cheap on ebay. I put a 20A circuit breaker switch in line with the 120VAC input from a wall socket after this pic was taken. You could just plug the thing in but I'm lazy and the plug is behind my toolbox.
Anyhow, this thing was pretty easy to put together and works like a charm. The bilge blower fan is like 800cfm and moves a serious amount of air. And I no longer have a taste like concrete in my mouth after a nub grinding or cab forming session. You just have to wipe the dust off the inside top of the tub every few days so's you can see what you're doing. To clean out the rig, you just pull out the blue hose, disconnect power to the lap, and unsnap the plastic tub from its lid, take the lap off the lid and take 'em outside and hose 'everything off. Do your lungs a favor and give it a shot!
C-ya,
Rick