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  1. Replies
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    What shape building do you all have where you can...

    What shape building do you all have where you can conveniently run black pipe without cutting custom lengths? Do you not have to stub out in particular locations or work around fire and electrical...
  2. I learned on a laser and plasma, but my...

    I learned on a laser and plasma, but my recommendation would be to use some router type G-code generators to make the profiles for 2.5D machining, then manually code in tools and offsets. You can...
  3. https://i.pinimg.com/originals/8c/fb/0b/8cfb0b669d...

    https://i.pinimg.com/originals/8c/fb/0b/8cfb0b669d2493b51c456701e6bb5f04.gif
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    That still seems weird to me. I'm curious if the...

    That still seems weird to me. I'm curious if the fittings can be snugged up as the pipe shrinks in the compression sleeve from vibration to close off the leaks. Sort of like how aluminum wire can...
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    On a slightly jenky note, jig saws with steel...

    On a slightly jenky note, jig saws with steel cutting blades work great, and can be angled as needed. Still lots of filing, but if you just need one...
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    120 is a good pressure for shop air. I just don't...

    120 is a good pressure for shop air. I just don't understand the 175-200 psi crowd.

    Nor do I understand the breathing air from shop air crowd either, but oh well, their money.
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    Just stick a VFD on it an run it open delta. The...

    Just stick a VFD on it an run it open delta. The 30 degree phase mismatch won't derate the motor as much as a run cap will.

    A reactively shifted sine wave always fits inside of the original sine...
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    Do you guys with the 175-200 psi compressors...

    Do you guys with the 175-200 psi compressors actually need that much pressure? Or do you regulate it down to 90 for the most machines at the point of use?
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    Can you just clamp the plate between two wedges...

    Can you just clamp the plate between two wedges and use a press type keyway broach to square up the corners?
  10. Replies
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    I use drill taps all of the time at work and they...

    I use drill taps all of the time at work and they are great. Usually get through 100-150 1/4-20 holes before snapping them. We used to have a plasma pierce to start on but now cut the drill size with...
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    High school calculus. I retained the ability...

    High school calculus.

    I retained the ability to apply integrals and derivatives (usually for electronics or motion control) but lost the ability to solve them. I usually type the integral into...
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    1/2" copper is $1 per foot here in California. 1"...

    1/2" copper is $1 per foot here in California. 1" copper is $3 per foot. Knockoff sharkbites tend to run an extra dollar over threaded fittings for black pipe, from what I see.

    I can't imagine how...
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    The direction switch is only wired to provide an...

    The direction switch is only wired to provide an on or off signal to the VFD, which is interpreted as a forward or reverse signal. You will need a separate contact to disconnect the start switch in...
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    The bridge rectifier acts as a freewheeling diode.

    The bridge rectifier acts as a freewheeling diode.
  15. Replies
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    What types of fittings are you using? The barb...

    What types of fittings are you using? The barb fittings are about a $1.20 depending on type, and the crimp rings are under 20 cents each for 3/4.
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    Ingersoll Rand D42IN Refrigerated Air Dryer 7.5HP...

    Ingersoll Rand D42IN Refrigerated Air Dryer 7.5HP 25 CFM

    Up to you what to purchase, but I have used this series personally in the past and it ran fine for the 3 years we had it until we got a...
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    What is your compressor horsepower or cfm? A...

    What is your compressor horsepower or cfm? A dryer is an investement but if you do it now and can save a bunch of cost of drops and valves it would make sense. Along with skipping the cost of...
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    We put in 1" copper with shark bites for a 132...

    We put in 1" copper with shark bites for a 132 PSI system. It goes up in a day and you can add drops wherever you want them in the future. Stationary o-rings are plenty reliable for moving air.

    If...
  19. We switch between cutting aluminum with nitrogen...

    We switch between cutting aluminum with nitrogen and steel with oxygen, and we seem to have gotten the ratio right because the flare ups in the table can last about 20 seconds after the cut has...
  20. It got the memo now. Just instead of mounting a...

    It got the memo now. Just instead of mounting a switch to the casting I get to build an entire new paddle switch to mount at the hose near the nozzle. So much for a half day today.
  21. Those are pretty reasonable prices. I'll...

    Those are pretty reasonable prices. I'll definitely go that route and just maintain the diaphragms and seals as they wear. The solenoids I used at a previous job were similarly priced and had about...
  22. Hand drilling die cast zinc (and ruining the part)

    So it's probably my fault but I'm making an electric control retrofit for a Clemco sand blast pot (I did this at my old job except I used huge solenoid valves for the pressure and purge directly, but...
  23. Everyone I know of who wants to move out of...

    Everyone I know of who wants to move out of California wants to move to Idaho. Now people are mentioning Montana because Idaho is getting too California-y
  24. I've only ever had luck with refrigerated air...

    I've only ever had luck with refrigerated air dryers. The various other cheaper products don't work well or long. Desiccant filters are a PITA with constantly changing/drying media. In a blasting...
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    Correct. This way looks a little funny just so...

    Correct. This way looks a little funny just so stop overrides start, in the event of a short or something.
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