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That doesn't always work, there are patent trolls out there that are listed on the stock exchanges, if you want to learn a bit more that, watch the video I ran across last evening, 'Why the U.S. Patent System is literally SCAM! | The Patent Scam | FD Finance' The patent office is allowing the...

I've made different indexing plates for the spin index so there isn't even that restriction.

Depending on how far into the weeds you want to get, you could buy "Gears and Gear Cutting" by Ivan Law, make your own cutters and mount the gear blank between centers on your rotary table or even on an attachment on your lathe. I read through several years of Model Engineering magazine from the...

Yes, I've seen the documentaries and even read some of the archeological reviews.

Short answer, changing the pressure angle of a gear does not change the pitch diameter.

Well, if you saw it on Youtube, it must be true!

The first shop I worked in had a number of lathes like that with added on electric motors and a four speed transmission, one of them had a 6 foot swing spindle and a 2 foot swing on the same lathe. The story was that the shop had a foundry at one point and when the city streetcar barns burned...

Good choice... until a sharp edge catches the join in the belt, been there, done that!

Totally different here, I just checked local(Canadian) prices, yellow brass is $3.30/pound, Tungsten Carbide is $10.00/pound, I dropped in at the local scrap yard and asked to BUY some yellow brass and they said they don't even sell it let alone give some away.

YMMV but I've not found Aliexpress any worse than Ebay and freight charges on small parts is negligible from them but definitely not from Ebay if sold by a US seller, to Canada. Anything with any amount of weight and things from China the freight price get insane pretty quickly.

That's annoying but it happens on Ebay, too. I was looking at some cheap crucibles on Ali, at $6 .... and $35 freight(Canadian prices). No, I wasn't expecting that kind of price and I do little casting so wasn't expecting the best quality either.

Things like that happen, most times they will just send what you asked for with no argument and you'll have a free sparkplug as well.

'good brand name' is relative, I used to buy Nicholson files, they were always great, I bought some about 7 or 8 years ago that were garbage, everyone is outsourcing to the least expensive supplier so for me it's a try one before you buy multiples.

That would be correct for a right angle drive because a 60° helical/worm has more axial load than a 30 or 45° and will work if the 60° is the drive gear/worm.

Without knowing more about what they do, probably not.

With all due respect, if you are commercially hobbing helical gears, that math is required, if you are milling the gears for low power, low usage gears, the chart I posted will get you where you need to be.

For general milling of the helical gears, the cutter isn't that big of a problem, according to Colvin and Stanley's Gear Cutting Practice book, there is a chart, Fig 77, p120 for how to select the appropriate B&S system cutter number.

That might work but unless you use a method like the Chuck Fellows fixture or another method that rotates the gear against the cutter, you will not get a constant depth gear tooth Here's a bit of the information Chuck posted.

Georges pot chuck is much less expensive and just, if not more, accurate and the pot chucks can be used for long parts that extend back into the 3 jaw chuck.

But instead of having 15 cans of paint laying around, you'll have 15 bags of powder, in two years when you go to use the paint can, it might work, the powder, with some care, will last a lot longer. A minimum powder buy of basic RAL colours is about 1.5 times the price of a can of paint so if...