开云体育

TERMS OF USE -- How the 7x12 Group Operates The 7x12 Minilathe forum was founded as a way for machinists, both expert and novice, to help each other learn about our machines and to inspire each other

Drilling a 486 CPU is like drilling glass, the 486 is probably harder. Same technique would be needed, diamond drill, water, patience etc. Here’s an old page for making a keychain from a 486,

It also reduces the heat generated in the tooth and washes away the swarf from the operation. Ultrasonic drills also use a mist spray for these same reasons (but they don’t utilize diamonds bonded

Diamond abrasive bits are actually diamond powder mechanically attached, not chemically bonded, to the bit body with nickel plating. When your dentist uses them, notice there's always a cooling water

HEURELA? ?TONY JUST? WELDING? SOME? HOICK AND? THAT? IT? THANK JACK 47 71

Depends on the age on the CPU. Most CPUs up to the first Pentiums were all ceramic – have fun drilling thru that. Later ones shrunk the ceramic bit and have a “moat” of maybe 5-15mm of

maybe a 44 mag animal

I thought the hole was to be through the circuit board, not the chip itself.? The substrate is silicon which is rather hard.? It has a Mohs hardness of about 7.? Titanium is less hard at 5 to 6 as

Perforate the chip with a LASER! ?in a CNC to run a circle pattern round-and-round to achieve the desired hole size.

Keychain or similar I guess, maybe drawer pulls for a nerd cabinet. Never tried drilling one, but yeah diamond would be the go. Maybe masonry or glass bits. It’s a pretty common craft item.

1) I am curious as to why you want to drill a hole through a scrap 486 microprocessor. 2) The substrate for the microprocessor is very likely some type of ceramic material, so it is expected to be

I don't think we are talking Cu/FR4 PCB drilling here, rather drilling through a ceramic microprocessor package.

I started with a .6 to 1.5mm set and then bought 10 pack replacements for some I did break, all from eBay.? I was drilling lots of small holes and was dulling them before I broke too many.? They

There are also re-sharpened ones that are even cheaper. Unfortunately, one of the batches I bought were packaged with a piece of? plastic foam with the drills stuck into it, quite a few of them broke

Yes, try the carbide PCB drills. They're sharp and hard and will cut stuff that just laughs at high speed steel or even cobalt drills. BUT they are fragile and will break if you look at them sideways.

Yep, the PC drilling machines I have seen were branded DAK they used high speed electric drive spindles, 10K rpm?? and we used small collet held carbide drill bits, they were CNC?

There are "printed circuit board drills" that I believe are carbide. Amazon has inexpensive ones.? Professional industrial ones cost more.? The are all quite brittle and easy to break.? They are

I have some cpu 486 or pentium vintage version But impossible to drill a ho;e in the material Normal drill for Metll Nothing Drill Diamand for glass or stained glass Nothing barely trace Probably

I still have no real idea on what caused the failure of the transformer and switch.? I just replaced the parts and hope for the best, with the lurking feeling that it will happen again.? I now do

Here working next is converting my cross slide to ball bearing. *Very easy tooy* . *Using a motor grade 6201 seal* Thd pdf is clearer than screw shot. I did not put here so did use space here if see