I need a skilled guy for boring work or similar!

I have two Cypreus II copper heatsinks with a problem: the hole inside isn't depth enough to put inside a diode with back aluminum heatsink like this:



The hole diameter is about 12.1 mm, but only for a lenght of 25 mm, after that the diameter become a little bit smaller. Usually the total lenght of the diode+small copper heatsink+aluminum heatsink is 30mm, so I need a guy with a suitable equipment that will modify for me that hole. Of course I need that the original diameter of 12.1 is preserved, and no damage will be done in the external threaded part.

This is the first issue to be corrected, but I have to correct another one:
I have a Zaser modified head (bigger with one extra fin) with an hole of 12.1 mm. This hole was black anodized as the rest of the head. I need that someone remove the anozidation from the hole with a reamer or similar tool. The diameter of the hole must be as close as possible to the original dimension. Also, this is a polished finished item, so no damage will be done around the surface.

I will pay every cost involved.
Please help me, since I have a lot of project ready to be completed, but first I must resolve those issues as soon as possible.
Thanks in advance.

I could do both of these, with a comment on first one:

I would simply just drill a hole through the back end of the module from the side where tiny hole is, where wires come out (so it will look like a tube with one threaded end).

If that is acceptable to you, PM me.

Otherwise, I do not know how would I deepen the back end without drilling it out.

I can remove the anodizing with a fine sandpaper. A picture of where it needs to be removed would be most helpful.

Hello!
Thanks for the help, but You cannot manage the hole from the other side.





As You can see in those shots, the back part is complex, and You cannot make a hole because there is a round space for the driver, for the teflon part, for the spring, and the screw for the negative pole.

The only way to do both the works (Cypreus and Zaser) is to use a adjustable reamer like this:

alesatore regolabile HSS 7,5 millimetri a 54 millimetri Alesatori alesatori | eBay

So, what You think to do?

Thanks.

Richard.

Ah, that's copper.

I don't work with copper, sorry.

Do not worry, Mr. Sinner has gently solved the issue

Minamoto Kobayashi said:

Do not worry, Mr. Sinner has gently solved the issue

Click to expand...

That's awesome, he's a good guy

Glad he was able to step in.