Search found 1161 matches

by kvom
Fri Jul 08, 2016 6:53 am
Forum: Build Log
Topic: CNW J class Mikado
Replies: 105
Views: 67843

Re: CNW J class Mikado

Hi Harold I use silicon bronze ingots for locomotive parts. I have been using Shapeways "White Strong & Flexible Plastic" for the wax. (LOL) I am having very good luck. Tim The white plastic burns out just like wax..? Doesn't shapways print in wax also? John The wax is much more expensive than the ...
by kvom
Mon Jul 04, 2016 6:41 am
Forum: Live Steam
Topic: 3/4"Kozo A3.
Replies: 47
Views: 9213

Re: 3/4"Kozo A3.

The cost of brass for the parts can be excessive. There is no reason steel cannot be substituted liberally.

There is one really nice A3 that I see at Cabin Fever running on air. I doubt it's ever been fired, but the craftsmanship is superb.
by kvom
Sun Jul 03, 2016 8:00 am
Forum: Build Log
Topic: HUNSLET QUARRY ENGINE BUILD
Replies: 130
Views: 38434

Re: HUNSLET QUARRY ENGINE BUILD

I had a ride behind this engine yesterday at CSP&P track. You'd think it was a speeder - crazy fast and a good puller.
by kvom
Thu May 19, 2016 6:20 am
Forum: Live Steam
Topic: Cross Compound Air Compressor
Replies: 31
Views: 7029

Re: Cross Compound Air Compressor

I was hoping Bill Huxhold would build some of these in 3 1/2" gauge A bit OT, but I saw Bill at NAMES a few weeks ago with a good number of his engine models being displayed. Based on their craftsmanship, I'd say that if he couldn't do it anyone else would have a struggle. Anyone who isn't aware of...
by kvom
Wed May 11, 2016 6:49 am
Forum: Live Steam
Topic: L.E. American crosshead packing gland?
Replies: 9
Views: 2143

Re: L.E. American crosshead packing gland?

One solution if you have to replace the nut is to make one with holes for a tommy bar.
by kvom
Tue Apr 19, 2016 7:20 am
Forum: Live Steam
Topic: Union Pacific Big Boy in 3/4 Inch Scale
Replies: 122
Views: 54623

Re: Union Pacific Big Boy in 3/4 Inch Scale

If I were to program that job I believe I could shave off a good deal of the run time by "isolating" the letters into separate areas and clearing the rest with a larger tool. The carbide engraving cutters I have are a 80-degree flute angle and a bit stronger, but I haven't tried one that small as ye...
by kvom
Mon Apr 18, 2016 6:22 am
Forum: Live Steam
Topic: Union Pacific Big Boy in 3/4 Inch Scale
Replies: 122
Views: 54623

Re: Union Pacific Big Boy in 3/4 Inch Scale

Whats the total depth of the cut? Also, did you just program for 1 pass, and then adjust Z by .001", or did you program for the entire job? Feedrate?
by kvom
Mon Apr 18, 2016 6:07 am
Forum: Live Steam
Topic: A champion is born.
Replies: 407
Views: 106055

Re: A champion is born.

It doesn't look as if the toolbox doors actually open.
by kvom
Sun Apr 03, 2016 7:28 am
Forum: Live Steam
Topic: Measuring distance between crankpins for rods
Replies: 16
Views: 4356

Re: Measuring distance between crankpins for rods

My method for my small (Kozo A3) was to put the frame and drivers on my bridgeport table, set the crankpins at the same level with 123 blocks, and use DRO/edgefinder to measure.
by kvom
Thu Mar 31, 2016 6:00 pm
Forum: Live Steam
Topic: Piping problems
Replies: 18
Views: 2781

Re: Piping problems

The drain pipe on the economy injector appears to be 3/8-56, although my thread gauge doesn't go that high. Threads do seem to match a 2-56 screw. The drain is hard to see on my little loco, so eventually I'm planning to replace that pipe with one of my own that has a 1/16-27 pipe thread on the oppo...
by kvom
Wed Mar 23, 2016 8:51 am
Forum: All Things CAD and CAM
Topic: Free and easy to learn 3D CAD
Replies: 50
Views: 42075

Re: Free and easy to learn 3D CAD

Hi, Solidworks is a very good commercial program which makes very nice drawings. It does not have the capability of generating CNC code. Mastercam does have an addon for Solidworks which does generate CNC code. I don't know if this addon is available for hobby use. Richard Trounce. The HSMXpress fr...
by kvom
Mon Mar 21, 2016 7:24 am
Forum: All Things CAD and CAM
Topic: Free and easy to learn 3D CAD
Replies: 50
Views: 42075

Re: Free and easy to learn 3D CAD

I've had the SW veteran's deal for over a year, and have found it quite easy to do the kind of parts I'm typically interested in. I worked through the online tutorials first. Most of the work I've done has been on model stationary steam engines for which I have 2D plans. These are pretty similar to ...