Finally after a while got some time to work on the laser. First thing I need is to get the exhaust system working. And I’m not sure when my friend will help me drill hole in the concrete wall. So I decided to use my vacuum and its working pretty good. So glad I kept all the attachments and the pipe from the old vacuum we had home. Pretty simple design, removed the stock vent completely and placed the flat attachment in place using 1/8" x8x3 plywood. Now I can cut Acrylic without any problems.
How did you get the exhaust piece out
@3D_Laser yeah that part is bit PITA. You will need to take entire gantry out.
How do I go about getting that out
@3D_Laser There are four nuts n bolts that you will need to remove in order to take the gantry out. Also you will need to take the black metal cover near Y max position. There are two nuts under there and the other two are on the exact opposite side under the stock exhaust.
Will post some pics when I’m at the shop tomorrow if you want.
Pretty nifty idea. I wonder are you just venting the smoke into the vacuum cleaner or is it venting out somewhere else? I’d be slightly concerned of accidentally sucking sparks into the vacuum & causing fire.
i would be more concerned about breathing in the fumes ,depending on what you are cutting/engraving .MDF http://www.hse.gov.uk/woodworking/faq-mdf.htm
http://www.hse.gov.uk/woodworking/faq-mdf.htm
so 8if you must use a vac cleaner at least have it outside and run the hose to the laser
@Yuusuf_Sallahuddin_Y The flat attachment is far enough to not suck sparks and the first pipe from the laser cutter to vacuum is about 4ft long so most likely there should not be no problem.
@Phillip_Conroy This the vacuum I am using and it has exhaust on the other end so I am using my old vacuum’s 6’ long pipe to exhaust everything outside the building.
I have not cut acrylic yet, so once I test that I will know for sure if its working or not. I absolutely hate the smell.
PS: Got Fire Extinguisher handy all the time!
ingenious ;-))
but noisy and power angry ;-((
what feed and speed are you using to cut the wood? How much pressure do you have on the air nozzle? Thanks. WK
I would like to see pictures I want to at least cut mine back
@StephaneBUISSON definitely noisy but once I buy like 8ft pipe in going to put the vacuum above the ceiling tiles and connect the exhaust to bathroom exhaust.
@William_Klinger 3mm plywood from Menard’s.
50[feed=50,ppm=40] pulls about 11mA.
Sometimes two passes are required.
@ChiRag_Chaudhari so I got the bed out to remove the exhaust but how did you make sure the bed was square so the mirrors align
@3D_Laser aaaaammmmm I actually never did that part. 
I printed an adapter for mine. cut down the interior part (removed gantry and did realign). Got a much larger fan and put it at the end of the hose and it is pulling better and allows access to laser door. At the same time I picked up a bucket shop vac (home depot). That thing works better than anything I have tried yet at evacuating smoke. It’s a bit loud. I added a honeycomb bed and it seems that I am producing less controllable smoke with the bed. I am thinking of using the air input hole in the floor as my exhaust instead. Anyone tried that?