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  1. Why even weld it? Can you not just machine an end...

    Why even weld it? Can you not just machine an end of an aluminum rod? Turn down the rest of the shaft if needed. Not a huge deal for a one off.

    In any case, I wouldn't trust a single weld like...
  2. Just mill the part out of billet if you just need...

    Just mill the part out of billet if you just need one, instead of building an entire press.

    I disagree with the people who say you just need a simple punch and v-die in a shop press. Dimensions...
  3. If I were to do it I would drill and tap a...

    If I were to do it I would drill and tap a pattern of holes directly on the joint and thread in set screws. This prevents slip in all directions.

    Having just read more of the posts I realize...
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    I like the dark blue ones we have, but I don't...

    I like the dark blue ones we have, but I don't think it matters much
  5. The starts per hour subject is a bit of a tricky...

    The starts per hour subject is a bit of a tricky one because it depends a lot on the specific motor and the inertia of the load. Proper blowoff makes a compressor a fairly easy load to start. The...
  6. Positive the motor seized and not the compressor....

    Positive the motor seized and not the compressor.

    I replaced a burned motor on a 10hp reciprocating compressor and it nearly blew another motor because the compressor head had issues.
  7. If you rely on burning charcoal to flavor your...

    If you rely on burning charcoal to flavor your food, you need to learn to season your food better. Electricity makes heat just that works just as well as charcoal or propane.

    A stainless hot...
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    Is it radial or torsional vibration? Single...

    Is it radial or torsional vibration?

    Single phase motors and combustion engines have torsional vibration. No electric motor should have any radial vibration.

    If you have axial vibration then...
  9. Sounds like they are made that way for cost, not...

    Sounds like they are made that way for cost, not safety. Not really any benefit over glass other than ease of forming.
  10. I've never seen acrylic bell jars before. All of...

    I've never seen acrylic bell jars before. All of the ones I've seen are glass.

    Anyway, acrylic shatters into sharp fragments just as easily and I don't think it's any safer than glass....
  11. Pressure pots for paint sprayers are rated to...

    Pressure pots for paint sprayers are rated to around 110psi often. I have two and they are very convenient.

    A cheap diaphragm pump can pull 20 in hg and may be adequate. Otherwise I would use an...
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    Aren't those teflon, and about $50 per foot?...

    Aren't those teflon, and about $50 per foot? Anyway, this hose definitely was not rated to that temperature.
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    I accidently ran 500 psi liquid nitrogen through...

    I accidently ran 500 psi liquid nitrogen through a rubber hose. It certainly got firm.
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    Areas where you can't have grit get in aren't a...

    Areas where you can't have grit get in aren't a suitable place for dry blasting either, as the stuff you blast off will get into the important bits and are often plenty abrasive on their own. You...
  15. If your six bends are from front to back...

    If your six bends are from front to back 1,2,3,4,5,6 can you bend in the order 2,1,4,5,6,3 or 2,1,5,6,3,4?Then you have just one or two bends you can't directly gauge off of and will have to scribe....
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    In general, yes, but with vehicles? Perhaps not.

    In general, yes, but with vehicles? Perhaps not.
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    Cut out maybe a 2" hole. Drill four smaller bolt...

    Cut out maybe a 2" hole. Drill four smaller bolt holes. Cut out a U shaped nut plate to fish up through the hole, and cut a mating plate for the bottom to bolt through. A little bit of compatible...
  18. Wait, why are you comfortable hot swapping entire...

    Wait, why are you comfortable hot swapping entire breaker panels but suddenly aren't interested in pulling a meter?
  19. If you had PG&E power you would just wait a month...

    If you had PG&E power you would just wait a month or so for the next outage and swap it out while they're trying to find which particular problem area shorted. Last time it got windy the underground...
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    Last time I asked our fastenal sales rep for...

    Last time I asked our fastenal sales rep for higher grade threaded rod I got three grades to choose from.
  21. Bend the sheets. Farm them out or get a cheap...

    Bend the sheets. Farm them out or get a cheap bender or machine a punch and dies.

    Otherwise you really ought to design a nice skeleton that then gets skinned.
  22. In high school I built a hardboard case to hold a...

    In high school I built a hardboard case to hold a stack of hard drives and floppy drives. It was an interesting computer but probably not something you would want to duplicate.
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    I ordered insulation for a powder coating oven...

    I ordered insulation for a powder coating oven and it came delivered in 32 boxes the next day. It was not at all expected but very convenient. Other than opening 32 boxes.
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    We spend a couple grand with Fastenal per month...

    We spend a couple grand with Fastenal per month and their prices for regular bolts are pretty decent. They come and stock our bins once per week.
  25. Do people ever show you a draft of a print and...

    Do people ever show you a draft of a print and have you give input on tolerances?

    I have a machinist friend I can bug (don't worry, I do his electrical) but many people don't.

    Mainly since when...
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