Gallery, Projects and General > How do I??
Gear parameters
Lew_Merrick_PE:
--- Quote from: John Rudd on September 06, 2020, 11:12:44 AM ---What I'm now unsure of is the material for the hob....I'm thinking silver steel?
But at the diameter needed, there arent many suppliers that do ss at diameters bigger than inch....
Tool steel as an alternative maybe....
--- End quote ---
Hi John -- from the other side of the pond -- Where we call silver steel tool steel. What size are you looking for (as I have a moderately large "surplus heap"). Irrational minds want to know ;-) -- Lew
Bee:
I think silver steel in UK translates to drill rod in the USA not tool steel which is HSS in most countries except China where it is cheese.
Instead of a large diameter rod just use a piece guage plate (flat equivalent of siver steel ie a high carbon hardenable steel) 3/8 thick as a disc. Cut it as only a single turn worm to make the cutter. You will have to feed it in slower depthwise but if just > one turn it can still even rotate the blank as it cuts. You could even double it up pinning two pates together for a bit longer worm.
Lew_Merrick_PE:
--- Quote from: Bee on September 12, 2020, 05:56:04 PM ---I think silver steel in UK translates to drill rod in the USA not tool steel which is HSS in most countries except China where it is cheese.
--- End quote ---
Bee -- At least here in the U.S. "tool steel" is any hardenable steel. Drill Rod is merely round bar Tool Steel. -- Lew
John Rudd:
From'this side of the pond to the other'..... :)
I havent measured directly the worm size diameter yet, but reckon on it being around 1-3/4"....
I'll get an exact measurement when I strip it out which wont be anytime soon as the lathe is working quite well at the moment....
As soon as I know the diameter I will post it up...... :dremel:
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