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Forgot to mention; the heated object color vs. temperature tables all assume you're in a very dimly lit room. Think, back corner of a blacksmith's shop in the pre-electric light days. If you use the

Hi Gregor, A rough rule of thumb for that 'magic temperature' is a good cheery red glow. A similarly rough guide to tempering the hardness is to use the oxide colour. After quenching to harden, clean

I have a Warco WM180V 7x12 as does at least one other UK member of this forum. I have had my one for just over a Year and believe it to be a lovely little lathe. Trawling through the Internet I have

Hi Roy, Ed, While I pretty much agree with you Roy, I found it useful to reference some tables initially. Starting from a pretty low experience base it was reassuring to know I was in the ballpark for

Hardening steels requires reaching a 'magic temperature', which I do not actually remember, or have the capability to measure. However, I am told that it coincides with the temperature at which the

It's not worth the effort to calculate speeds! In production shops, it's a big deal, on the concept of "time is money." For hobbying it's easier to just start slow & increase speed until either the

You should be able to get it hot enough with a MAPP torch. Don't forget, you're only trying to heat treat the working end, not the whole tool. I'm basing that on what my Turbo torch will do; I assume

Those little ones are primarily intended for "chip carving" not lathe use. The bigger ones look like a generic carving set, not a lathe set. Still, for small work, anything you can make work is a

Hi Steve, I too have been pondering what size mill would suit my needs. Not ready to buy yet but gathering info on what to write on my wish list. Your advice seems fine but relative. What sort (and

Very nice. Thanks!

Gregor, while I am no expert, generally there are three terms that are used in heat treating - annealing, hardening , and tempering. each metal has its own specifics but for example for o-1 ( aka oil

Very useful. Thanks. -JC

I made up a cheat sheet for setting the RPM on my minilathe for various materials and diameters, and thought some folks here could use it too. Here it is in PDF:

Another question from a beginner. According to a basic book about home machinery it is possible to temper metal using a MAPP gas torch. I have tried this on a 4x1/2 punch made out of annealed 4140

--Hi Rance, Not sure where your looking, but in the 2007 Grizzly catalog (pg.614) they are $2.95 ea. I bought three, 1/32,1/16,1/8 with a 7/8 hole a few years ago when I first got my mini mill, during

G'donya John! Ian wrote: it much middle and to do ticket I

FYI, check out the GrizHFMiniMill mailing list. I find it much more useful then the minimill list. http://groups.yahoo.com/group/GrizHFMinimill/

Some, Gregor - other than price, it's not much. It's a good mill if you're planning on doing only very small parts. Even the "Mini" mill is definitely NOT a Bridgeport. You have to remember the intent

Hi, Does any of you have any experiance with the CJ0618 mini lathe? I'll appretiate getting any piece of info. Itamar.

Gregor The Mini Mill sometimes proves to be a bit cramped for space and travel. The Micro Mill, which is even smaller, would be very limiting in what you would be able to do with it. I'd probably