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Unless you're replacing existing bolts in threaded holes, why not just use an M10 x 50 hex bolt, there's only .5 mm difference in diameter?

I listed the major diameter of the tap, the tap drill size, direct from Heli-coil, is 3.15mm for Aluminum and 3.2 for steel, magnesium and plastic though other tap manufacturers just go with 3.15mm. The way Heli-coil groups aluminum separate and steel in with magnesium and plastic seems a bit...

There's a company called Materion, Mayfield Heights, Ohio, United States, that makes Hypereutectic AMC4632, no idea where you'd get it though AND They sell it as forgings. Other than that, AISI 4032 is probably your best alternative.

No, the major diameter of an M3x0.5 STI tap is 3.719mm diameter.

I was on Facebook for two years about 5 years ago, there are some I'd like to follow but won't on Facebook, it has become a cesspool and don't need that in my life.

That's a kind of funny comment. When my son was ~5 years old he and the two Chinese boys from next door would play in the back yard, he'd come back in with grass and dirt on his clothes and the other kids, who came wearing white shorts look as clean as when they came over. No idea how that...

That may be the issue, some areas of China are still very poor so rebuilding may be the only affordable option, if you've ever watched the videos of rebuilds of equipment by central Asians, Pakistan, etc, you'll see people rebuild things that would never be rebuilt in most western countries but...

It appears that her family has a machine shop/repair shop, when she is using a sandblaster she obviously has access to a pretty significant compressor, not one you'd generally have in a home shop. Not taking anything away from what she does but that's also probably where she learned a lot.

I know that Alibre has off line licensing options for the higher end product, maybe for Atom as well. It might be worth the time to ask.

Double post

Borazon however is the trade name General Electric gave to cubic boron nitride (CBN) when they first produced it in 1957

Do you have a link? While that's quite true, if you have a 20mm diameter boring bar it won't fit well(at all) in a boring bar holder with a 3/4 inch bore. You can just clamp them in a regular toolholder block but I prefer the holders that clamp around the bar like Beeblebrox showed as they...

Now another question; boring bar holders. Are there metric sized boring bar holders, I've looked and the bores are always imperial(inch) sizes but I can buy metric boring bars much cheaper than imperial sizes.

The 1950s 100mm HBM I ran had a #5 Morse taper and no drawbar but it did have a locking wedge that fit in the extraction slot, the step up to the new HBM with ISO40 tooling was a huge improvement.

I have a 14 x 40 lathe, the set I need is the 'D' series, I was just trying to find out if the 'C' designation was a standard as most sellers don't list by swing, just by the series and the 'C' never had a reference to swing or even the physical size of the tool post.

What class is that motor for?

I'm considering buying a new Multifix type tool post, it will likely be Chinese just from a cost standpoint, but they often come up with a size designation like 'Swing Over Bed C2/3 SC/2', how does that relate to the physical swing of my lathe. On any search I've done, if you replace the number...

How much larger than the crucible does the inside of the furnace have to be, I have one I've been dragging around for 30+ years and it seems to be good size, I think it's considered a 10#, it's ~6" diameter at the top? I imagine there must be optimal clearances for diameter and probably height...

Thanks for the reply. When I was doing the casting the 'best' burners were the ones Ron Riel designed, has there been improvements and are there better designs, I have full machining and welding capabilities so building is not a problem, I think I just need more information of best practices or...