Potd - Project Of The Day- What Did You Do In Your Shop Today?

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Franko

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That's going to be an awesome anvil, Peter.

Here's what I did today. These are chin rests for a rig that holds people's heads in position for photographing their hair diseases.

They are made of 3/4" Delrin.

I made the dished cut with a modified 3/8" carbide cove router bit. I had to mill off the bearing stud in the middle. I then chucked it in my mill and made the passes .26" both directions from the center.

Then I used my new facing mill to mill off the planer chatter marks on the faces of them and gang clamped them on edge in the mill vise to clean the saw blade marks off the edges and bring them to exact matching size. Dimensions were not critical, they just needed to be the same.

I used my router table and a 1/2" round-over to round the ends, then a 1/8" round-over to soften the top edges.

I was duplicating a Canfield part with some freedom of design. The Canfield chin rests also had the swirl marks at the bottom of the cut, so I'm ok with 'em. Besides, I couldn't figure how to remove them. Sanding Delrin does not produce very slick results, and they need to be slick for hygenic reasons.

chin rests final_0380.JPG
 

markknx

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Franko, nice job, I like to play with plastic some times.
Mark
 

T Bredehoft

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I started/continued work on an ER 40 collet holder for my Atlas Clausing lathe. You know, the 1" 10 thread is difficult to find tooling for. I got as far as grinding the ID taper. Still need to thread the OD and make the nut.
 

Franko

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Thanks, Mark. Delrin is a very satisfying material to mill. I'm not that fond of acrylics, but often that what is has to be.
I'm very end-product orientated, so I don't have a preference for what materials I use. I just use the one that seems best suited for the purpose.

But, I do love making things on my mill and lathe. Metal and Delrin come off the machine with such beautiful finishes, and there's rarely any finishing required, except painting sometimes. I'm very experienced at painting, but I don't enjoy sanding and painting.
 

taycat

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Had go at making some MT 3 drill Chuck holder for lathe realistic.
Not done tapers before so went for it worked out better than I thought it would.
Then used it to drill some holes to make sure it worked and it did.
 

MozamPete

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Do you plan to harden the face?

Once I have all the shaping done I was planning to harden and temper the whole anvil. Just heat it again in the forge and water quench it for a quick cooling, then temper for a couple of hours in the kitchen oven to remove the brittleness. But I'm open to other suggestions/recommendations.
 

roadie33

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I started/continued work on an ER 40 collet holder for my Atlas Clausing lathe. You know, the 1" 10 thread is difficult to find tooling for. I got as far as grinding the ID taper. Still need to thread the OD and make the nut.

Try finding the 1-1/2" x 8 tpi. I ended up single point threading it. Then had to pick up some gears so I could do the Metric 50x 1.5 threading for the nut.
Here is the one I made. I use it everyday.

upload_2015-4-5_0-34-21.png
 

extropic

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Extropic, It is possible you've misinterpreted levity as a lack of concern.

I could detect zero concern in your reply (#3248). When it comes to such serious safety issues, I choose to be quite clear. He who is silent is understood to consent.
 

T Bredehoft

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Excellent! I first single pointed a stub arbor to check the ID threads, single pointed them, too, of course. I got the taper within .0001-2 of 8° in .100 X movement. Yes, I'm proud of my self.
 
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