Ouch. Looks like it could’ve been worse, though. Great progress since you got rolling 
Looking forward to more 
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OK, here is the last part machined, a Heat-sink.
After mounting the 86mm reflector forward of the original position, a gap or space was created even with the longer reflector. So this created an opportunity to add more heat distribution. I had to draw this up on the fly on paper.
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The copper is pressed in with .0005 interference press fit. Copper is very sticky and a light press holds good.
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Finishing outside diameter and parting it out simultaneously. Left .007 thick and broke it out by hand.
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Finished Heatsink at .290 thick.
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Hey I learned something from you CNC man! I’ve never thought of holding a parallel to the chuck with magnets. Seems easier than bumping it straight with with a mallet and checking wobble with a dial indicator. And tool pressure doesn’t push it back when you have a light grip on thin parts.
I never got a chance to learn CNC machining where I worked, wish I did. I was always too busy doing repairs on manual machines for them to find the time.
” mr_magoo ”
I recycled the two magnets from a trashed cheap headset someone threw away. They grip hard. Just keep the RPM low or it may come out. We also use a triangle shaped piece from flat stock we cut on a band saw that cannot fly out of a 3 jaw chuck and a X shaped for 4 jaw chuck.
Manual Machinists are harder to find today and pay more most of the time. CNC machinists today are becoming more like operators, button pushers and part changers. I started manual machining for many years before slowly doing both.
You never know whats around the corner, maybe you will. But if not, be the best at what you do now, smile and be happy 
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Ok , here is a fit check of the adapter, reflector, bezel and ar coated lense.
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The new reflector is considerably larger, 86mm x 84mm vs 72mm x 68mm.
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There were no machining done to the MT07.
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The heatsink is not in yet, so the led is .290 below the reflector. Going to work that tomorrow
Also it may need some focus adjustment, but I hope not much.
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There is a lot yet to finish and I will need some help doing a LED swap to a XHP72.2 .
And any suggestions you guys have. 
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That is machining pawn at its best. Nice work Mr CNC.
Looks great so far.
+1 I love seeing machining set ups
Very cool mod.
Time to assemble and test. We will be making some additional mods if possible.
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Is there a resistor mod that can be done with some improvement in output ?
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Wow, it checked .287 thick core. That is approx .640 total under the LED.
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Here you can see a doughnut hole in the middle. Any suggestions how to stop this ?
This was a 4500k XHP70 LED i think, looks soft white on the wall.
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AFAIK that reflector is better suited to small die LEDs. I don’t think you can completely eliminate the donut with an mtg2.
Nice mod CNCman. Changing the LED to an XHP70.2 and slicing and dicing it might be a good way to go to resolve the donut hole issue and improve output a bit.
I thought that to pinkpanda3310, so after checking the reflector on Aliexpress, will this be ok for the XHP70 ?
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Thanks everyone
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Hoop, Yes that is a good idea so I will order one today. It should be here in time.
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Looks like the same reflector to me.
I was going to ask if they spun out on higher RPMS…I usually would use a parallel as a back stop, set the part and tap it out…
nice work!
Is the donut hole only visible when white wall hunting?
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Sorry for the late reply. I took it out for a walk last night and yes it was actually big at longer distance.
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Also noticed it was quite a bit HEAVY. So i weighted it at……
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The Buffalo was hungry over the Holidays.
I think I gained some weight in the last few days too…… :laughing:
There’s no good way to eliminate the hole other than LED swap.
To eliminate it you can:
- dc-fix it
- find OP reflector
- (?) mount the LED out of focus
Each will significantly reduce throw.
Different LED is what I would suggest…