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Mounting Diamond Wheel to a 1/2 Shaft

Im pondering how to mount this wheel on this old motor, just using it for touching up HSS and Brazed Tools.
I was thinking of making a flange which I did, but the shaft has such a large flat on it that its hard to get a good fit that runs true. Then I thought I should sleeve the motor shaft and mount the flange on the sleeve, then set screw. or maybe use a Tapered Split Compression Sleeve?
Any Ideas? Thanks

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Tags: Mounting Diamond wheel to a 1/2 shaft

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Ever try to press fit titanium

Maybe there's a trick to it, but I sure haven't figured it out. I was trying to duplicate what I thought was a press fit of a 1/4" rod through a 1/2" rod, but I just couldn't mange it. I started out with the 1/4" rod turned down so only 1/2" of it was 0.249" diameter and reamed a 0.248" hole. When my press went up past 2000lbs I figured it went bad. I managed to press it back out and saw the smear. So then I tried smearing it up with anti-seize, same results. Then I tried 0.0005" clearance, same problem. Maybe this was just a bad idea. Any tricks?

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Tags: Ever try to press fit titanium

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My bad. I did join hobby-machinist.com and though that I'm posting there... I don't understand how I accidentally posted here again. And I can't delete it either

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Tags: Help needed to choose the Right Lathe and mill

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For a one-off project, I need to attach this hydraulic pressure gauge to a chamber in a steel block. The steel is free-machining, unproblematic. Inside is hydraulic fluid, at pressures up to 400 Bar. How do I design the receptacle that this screws into?

img_3911.jpg img_3912.jpg

The thread is a parallel (non-tapered) 1/4" metric G (Whitworth British Standard Pipe Parallel) intended for strength, but not to seal. So the seal must come from one of two places. Either the short 5mm brass stub should be forced into some type of taper, or the 10mm flat must bear against a trapped sealing washer or o-ring. In either case, I can't just drill an 11.8mm hole and tap it.

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Tags: How to design/machine receptacle for hydraulic fitting?

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how to approach machining some parts

I'm relatively new to machining. I took a couple of courses at the local community college years again, but recently have gotten into it again as a hobby.

I'm trying to build a stirling engine using Jan Ridder's plans and I am stumped as to how to setup/machine some of the parts for the crankshaft. Below I've included a picture of the parts in the plan I'm having problems with. Specifically parts 2, 4, & 6:

Initially I turned things to the diameter, then parted them off at the appropriate length, but now I can't figure out the best way to hold them. Upon further reflection it occurred to me that perhaps I should turn the offets before I part them off. Overall, I'm completely stumped.

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Tags: How to approach machining Some parts

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to start...

Hello!
I am very interested I'm machining. But I don't know what milling machine to start out with. At school I used a grizzly g0705 round column, and I am not very fond of it. I have enough room for a Bridgeport, but my friends told me about lagun and wells index. What do you recommend. Also can you recomend some tooling for it.Thanks!

P.s. I will be cutting soft steel and a lot of aluminum.

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Tags: to start...

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Machine Tool Arbor Spacers

Anybody out there inventory arbor spacers in wacky thicknesses? I need four different spacers for a .875" shaft, ranging in thickness from under an inch to right around 1.250". But the exact widths aren't "nice" numbers (for example, 1.013).

I realize I have the following options, as well:
1) Make them myself (which I might end up doing)
2) Assemble a "set" of off-the-shelf spacers to equal the desired amount (however this is a production environment where changeover is key, so reducing parts helps maintain friendliness between us engineers and the tool crib guys).

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Tags: machine Tool Arbor Spacers - Odd thickness Where to buy

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Machine Tool Arbor Spacers

Anybody out there inventory arbor spacers in wacky thicknesses? I need four different spacers for a .875" shaft, ranging in thickness from under an inch to right around 1.250". But the exact widths aren't "nice" numbers (for example, 1.013).

I realize I have the following options, as well:
1) Make them myself (which I might end up doing)
2) Assemble a "set" of off-the-shelf spacers to equal the desired amount (however this is a production environment where changeover is key, so reducing parts helps maintain friendliness between us engineers and the tool crib guys).

More...

Tags: machine Tool Arbor Spacers - Odd thickness Where to buy

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