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Thread: Air flow

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  1. #11
    Only thing to watch is overheating. These compressors are designed for fairly short run times in normal use, with pressure cut-off switch. Running for 30 mins or an hour on a long cut they might get too warm. I fitted a computer fan on the back of the crankcase to blow air through it.

  2. #12
    Strange that! I had a LIDL airbrush compressor, with a disposable welding gas bottle to make a reservoir. I only used it to clean down the machine and shift any build up of chips. This has been since replaced with a small Jun-Air compressor, which is nice and quiet and it only cost me 20. It is old and needed a new pipe and a service, but it is a quality machine. Apparently these compressors are used in Banks as part of the security grill system and with the closure of Branches, they are becoming available.

  3. #13
    Doddy's Avatar
    Lives in Preston, United Kingdom. Last Activity: 23 Hours Ago Has been a member for 8-9 years. Has a total post count of 1,364. Received thanks 188 times, giving thanks to others 66 times. Referred 1 members to the community.
    Quote Originally Posted by JohnHaine View Post
    As others have said, use a high speed and try to stick to a free machining grade like 6061 / T6 (IIRC). I use a airbrush compressor with a small reservoir and a small jet pointed at the cutter. Use standard airbrush hose, about a 1mm hole in the jet which is mounted on a bit of lokline from the mill head so it can be directed at the work. I don't use coolant.
    If you don't mind, can you advise compressor model?, also, can this run/provide cooling continuously (say 1hr+.... I know that's probably short for some people)

  4. #14
    The reason I went for the large pond aeration pump is that it can run continuously (24/7 if necessary). It is quiet compared with even an airbrush compressor, pumps out 80L/min free air (70L/min in a typical pond aeration rig) and can produce 0.3 MPa which is 43PSI The ACO-388D costs 40 - ish. When I get my machine recommissioned, I will use it again, with the bigger compressor for large area clearance.

    Just a footnote, I started off with a smaller pump, which was OK but not brilliant.
    Last edited by cropwell; 31-05-2022 at 09:57 PM.

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  6. #15
    Quote Originally Posted by cropwell View Post
    The reason I went for the large pond aeration pump is that it can run continuously (24/7 if necessary). It is quiet compared with even an airbrush compressor, pumps out 80L/min free air (70L/min in a typical pond aeration rig) and can produce 0.3 MPa which is 43PSI The ACO-388D costs 40 - ish. When I get my machine recommissioned, I will use it again, with the bigger compressor for large area clearance.

    Just a footnote, I started off with a smaller pump, which was OK but not brilliant.
    I just ordered thw ACO-328, which is also 80L, will see how it goes, thanks for the help. appreciates.

  7. #16
    Quote Originally Posted by Doddy View Post
    If you don't mind, can you advise compressor model?, also, can this run/provide cooling continuously (say 1hr+.... I know that's probably short for some people)
    Sorry, I haven't a clue it's just one of those generic airbrush compressors. With the cooling fan it can run indefinitely I think.

  8. #17
    Muzzer's Avatar
    Lives in Lytham St. Annes, United Kingdom. Last Activity: 2 Hours Ago Has been a member for 4-5 years. Has a total post count of 388. Received thanks 50 times, giving thanks to others 9 times.
    Another option might be a HVLP high volume low pressure paint sprayer. These use a radial compressor, so sound rather like a vacuum cleaner...

    I bought an Erbauer one from Screwfix and it worked well for clearing swarf - too well, so the stuff ended up all over the workshop. Until I get round to fitting an enclosure, I am persisting with flood cooling and periodic blasts with a handheld air line.

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