Hephaestus
Well-Known Member
Don't reject a 3 phase machine for that reason alone. Very easy to run on single phase.
Glad someone said it.
230/1ph to 208/3ph converters are cheap like borscht compared to the tooling...
Don't reject a 3 phase machine for that reason alone. Very easy to run on single phase.
================================================I know a homebuilder who invested well over $5,000 for a new vertical mill for his second homebuilt, a Onex. I honestly believe that, with my drill press, bandsaw, and combo disc/1” belt sander (all tools that he had before he bought the mill), I could build all the Onex fittings in less time than he could with the mill.
BJC
I know a homebuilder who invested well over $5,000 for a new vertical mill for his second homebuilt, a Onex. I honestly believe that, with my drill press, bandsaw, and combo disc/1” belt sander (all tools that he had before he bought the mill), I could build all the Onex fittings in less time than he could with the mill.
BJC
My only concerns with all these old, used, 3-ph tools is that for someone who wants just a small machine, it's a lot of extra concerns where it doesn't really need it.
===================================My only concerns with all these old, used, 3-ph tools is that for someone who wants just a small machine, it's a lot of extra concerns where it doesn't really need it. Something like a G0704 or PM-25 runs on 110 and does the job.
yes, of course, in a few years if machining is actually something that gets done often going with a bigger machine will be a better bet. A good opportunity to trade up if that's the case. But if the work is decking off a chunk of aluminum or drilling a row of precision holes in some 3/16 4130 there's no need to go rearrange the whole shop for a crusty old Iron mill, hard-wire in a VFD or rotary converter or phase inverter or whatever else, and all that headache when you could just get a brand new modestly sized machine that will simply plug into any outlet and do the work, no different from a regular drill press or chop saw.
If all one is doing is small stuff. Scrapper never mentioned needing rotary indexers, never mentioned trying to run 1/2" endmills through 01 with 1/8 stepover at a 1" DOC, there's just absolutely no need to even suggest a 3-phase mill is the better bet.
Because of course it is. But it is also overkill, and I'm going to give him the benefit of the doubt that he knows those are just overkill and not right for his situation.
===============================Deff
Definitely not for airplane stuff. Well, maybe handy on occasion. I’m not much of a airplane builder these days it seems.
For tube and fabric a crappy drill press, hand file, tin ships, hand hack saw and a cheap old vise will build one pretty dam fast. Everything else is a luxury.
For 98% of the stuff you would make .001" is good enough. You don't need .0005" these People have become Anal about today. For Industrial Stuff I look for School Auctions that have Tools that were hardly even used or they used mainly Wax and Aluminium. Like my Industrial 3 phase Variable Speed Powermatic Drill Press I bought at a College Sale like New for $250, used at that time they were $1,500+.
===============================Deff
Definitely not for airplane stuff. Well, maybe handy on occasion. I’m not much of a airplane builder these days it seems.
For tube and fabric a crappy drill press, hand file, tin ships, hand hack saw and a cheap old vise will build one pretty dam fast. Everything else is a luxury.
===========================================Let's get realistic... 1/64th of an inch is roughly .01"
.001 is less than 1/256th of an inch.
Nobody here needs that much accuracy. In fact a little slop is probably better as it's probably cooler on the aircraft than on the mill.
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