Search found 1536 matches

by John Hasler
Sat Oct 17, 2020 5:23 pm
Forum: Milling Machines
Topic: opinion; old German milling machine
Replies: 17
Views: 527

Re: opinion; old German milling machine

liveaboard writes:
> OH asks; "What do you want to make with that huge expensive machine??"
> I don't even know; but something always turns up.

Tools, fixtures, improvements and enhacements for that machine (and others). Surely there are things your lathe needs that require a mill.
by John Hasler
Sat Oct 17, 2020 1:06 pm
Forum: Lathes
Topic: Question about lathe levelling
Replies: 8
Views: 401

Re: Question about lathe levelling

atunguyd writes: > Where this really battles is time - Any movement and I pretty much need to leave it overnight > to stop that tiny swaying motion. Suspend the bob so that it is partially submerged in a pan full of clear oil or water. That will quickly damp the oscillations without affecting the st...
by John Hasler
Fri Oct 16, 2020 8:32 pm
Forum: General Discussion
Topic: Bearing issue?
Replies: 19
Views: 319

Re: Bearing issue?

Do you see that with everything (topslide, compound, and cross-slide) locked down?
by John Hasler
Thu Oct 15, 2020 8:14 am
Forum: Milling Machines
Topic: opinion; old German milling machine
Replies: 17
Views: 527

Re: opinion; old German milling machine

That's a really interesting design with the shaper-like Y axis.
by John Hasler
Mon Oct 12, 2020 2:33 pm
Forum: General Discussion
Topic: DRO Functions
Replies: 9
Views: 420

Re: DRO Functions

Where can I find that tool load equation?
by John Hasler
Mon Oct 12, 2020 7:08 am
Forum: General Discussion
Topic: DRO Functions
Replies: 9
Views: 420

Re: DRO Functions

If you mean chip load, no. Tool parameters, speed, and feed determine it.


https://cimquest-inc.com/what-is-chip-load/
by John Hasler
Sat Oct 10, 2020 6:58 am
Forum: General Discussion
Topic: Way oil
Replies: 12
Views: 916

Re: Way oil

Mr Ron wrote:
Fri Oct 09, 2020 5:03 pm
Thank you all for your input. Now another question : Can way oil be used for bearings as in headstock bearings? Would using the wrong lubricant damage bearings?
Using oil with too much viscosity can cause bearings to overheat.
by John Hasler
Thu Oct 08, 2020 8:27 pm
Forum: Riding Scale Railroading
Topic: Electric drive motor specs
Replies: 30
Views: 849

Re: Electric drive motor specs

What are the dimensions? Comparing them to motors of similar size and known ratings can get you a rough estimate of the power. You can also measure the top speed, the armature resistance, and the stall torque.
by John Hasler
Sun Oct 04, 2020 3:17 pm
Forum: General Discussion
Topic: New Table for the Avey: More Photos
Replies: 0
Views: 197

New Table for the Avey: More Photos

The Burgmaster table is installed on the Avey and working very well though not quite finished. The improvement over the little Grizzly table is huge. No more flexing, wiggling, and bending. No more stiff spots in the travel. No more having to keep the gibs so tight my hands wear out cranking the tin...
by John Hasler
Sun Oct 04, 2020 8:09 am
Forum: Lathes
Topic: Base single to 3phase system
Replies: 30
Views: 1036

Re: Base single to 3phase system

That I fully understand, and is the point I was making when I assumed the wire size available may not be correct. I now suspect that it is. If not, the variation will be slight, and I can adjust by adding or subtracting a few turns. There's ample room to do so if I must add a few. H You can change ...
by John Hasler
Sat Oct 03, 2020 11:54 pm
Forum: Lathes
Topic: Base single to 3phase system
Replies: 30
Views: 1036

Re: Base single to 3phase system

They give the diameter including insulation because it is needed when calculating the dimensions of a coil. The strength of the magnetic field is proportional to the product of the number of turns in the coil and the current through it. This means that as long as your new coil has the same number of...
by John Hasler
Sat Oct 03, 2020 1:40 pm
Forum: Lathes
Topic: Base single to 3phase system
Replies: 30
Views: 1036

Re: Base single to 3phase system

No, they mean including insulation. This information is essential for winding coils. They should give the resistance per meter somewhere, though. Perhaps it's in the standards somewhere.