Re: Drill press
[Re: IMGTX]
#3129571
03/15/23 09:07 AM
03/15/23 09:07 AM
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Joined: Jan 2005
Posts: 1,776 Keymar, MD
DusterKid
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 1,776
Keymar, MD
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It's broke in half where it changes in diameter from big to small. There's 2 bearings that mount on the bottom side with a spacer in between the bearings. The top part goes thru the top pulley. The center of the "insert pulley" is hollow for a square stock of the drill press shaft spindle.
Is the hollow in the middle round or square to fit the drill press shaft spindle or is it round and the drill press shaft spindle connects to the pulley on top? If the hollow is square then it may take a shop with a broach or something to make the square hole. (Not a machinist so I don't know what the options there are). If that is the case it may be cheaper to have the two pieces welded together and machined down to fix it. If it seems like a decent tool then it would be worth fixing but I have seen some really bad crap being sold in the last couple decades. Sadly it's kind of a crap shoot. The hollow part is square.
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Re: Drill press
[Re: DusterKid]
#3129597
03/15/23 12:05 PM
03/15/23 12:05 PM
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Joined: Sep 2003
Posts: 19,700 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,700
north of coder
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as a machinist, in my opinion, your options are not favorable. fixing what you have by welding the broken piece will be a tricky proposition, especially if you or the person you get to weld it up, lacks experience welding chinesium. that stuff is full of who knows what alloy, and many times when welded, will fracture on each side of the weld no matter what precautions are taken during the repair. if you can find a machine like what you have that has other issues but the part you need is good, buy it cheap, or find the part you need by following the ideas already presented. if it were me, i would look on the page of fake faces or craig's list for a better machine. lots of them there for very good prices. remove the motor, the chuck, pulleys, and any other usable parts from your press, then junk the rest. just my machinist in me talking. your mileage will vary.
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Re: Drill press
[Re: DusterKid]
#3129607
03/15/23 12:29 PM
03/15/23 12:29 PM
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Joined: Jan 2003
Posts: 15,911 Jefferson State
srt
ESYC
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ESYC
Joined: Jan 2003
Posts: 15,911
Jefferson State
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Craigslist in Frederick has a nice Delta 3/4 hp 120/240 If you're in the position to budget, or finagle a better deal. I bought a 1940's delta many years ago and don't regret it a bit.
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Re: Drill press
[Re: moparx]
#3129608
03/15/23 12:34 PM
03/15/23 12:34 PM
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Joined: Apr 2003
Posts: 12,248 Looking for a way out of Middl...
IMGTX
I Live Here
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I Live Here
Joined: Apr 2003
Posts: 12,248
Looking for a way out of Middl...
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Very good point about the chinesium What about taking 4 slabs of flat 1/4" ( or thicker) plate steel and welding them together like a box along the edges. This would make the square hollow without special tools. Trim the excess and chuck it in a lathe to turn the outside round. Not terrible labor but cost to pay someone else to do it? Edit I just found this. This guy has a away that may be easier and cheaper https://www.youtube.com/watch?v=tnJMDtZelms
Last edited by IMGTX; 03/15/23 12:42 PM.
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Re: Drill press
[Re: 360view]
#3130146
03/17/23 02:14 PM
03/17/23 02:14 PM
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Joined: Sep 2003
Posts: 19,700 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,700
north of coder
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that would be a really interesting topic ! when that becomes a reality, i'm sure there will be a super version of 3D printing, as well as ways to make whatever parts the computers needed for that flight would require. the material needed for such repair parts, which i'm sure would include some exotic materials not yet thought of yet, would require some thought as to the variety and amount to carry as well. as the machining industry is constantly evolving with new, more powerful machines able to do amazing things with a single setup, weight is drastically increasing as a byproduct. old manually operated machines that are very precise are very heavy as well, because the weight is used to keep the machine extremely ridged, which absorbs vibrations and any shock loads that may be imparted during the process, thus allowing repeated, precisely made items to be produced. although spacecraft are not lightweight vehicles, component weight is still a huge concern. as an old [not much hair left on the top of my head] machinist with lots of experience with the CNC machines of my time, it is pretty neat what a person can do with just a basic drill press, small lathe, a bridgeport mill, and a few measuring tools.
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