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  1. comstock-friend

    Source for small fasteners in U.S.

    Square is true on the beam engine, the locomotive is maybe 50/50 or maybe a little more hex than square. John F
  2. comstock-friend

    Source for small fasteners in U.S.

    Yes, you can buy USA made quality socket head cap screws for better price than scale, but on a 1800's beam engine or 1920's scale locomotive??? Not on mine. John
  3. comstock-friend

    Source for small fasteners in U.S.

    How about American MODEL Engineering - support the hobbly... https://godshallscustommachining.com/collections/frontpage/fasteners#MainContent John F
  4. comstock-friend

    Collets for End Mills

    Does the spindle just have the dowel in it or is the dowel in a collet? (Assuming the spindle is R8.) The wood should be easy to drill out (don't nick the spindle taper or collet). If the wood was in a collet, after the wood is removed knock the collet out with the drawbar, or use a brass bar...
  5. comstock-friend

    Fusion 360 replacement

    Not just software. I had an HP scanner that was fine for what I was using it for. Comes Windows 10 and the scanner no longer works. Ask HP if a Win10 driver was available. No. Interestingly, a third party was selling a driver (for $75!) to allow it to run. Last HP device I'll own...
  6. comstock-friend

    Suppliers in US

    Hanson supplied the rivets and some tooling for our Bill Harris Steam Roller project at the local JC...
  7. comstock-friend

    Suppliers in US

    For rivets and similar fasteners I like Hanson Rivet & Supply Co John https://www.hansonrivet.com/?gclid=CjwKCAjwwMn1BRAUEiwAZ_jnEhfdA99hH08WoX96nmbWiQhU1H7Ogg6saxEi8wUeR6YYrXVnNUDLLBoC9rEQAvD_BwE
  8. comstock-friend

    Stuart Beam Engine Piston Rings

    Yes, I see a 1" bar of the stuff is about $ 60 per foot ( McMaster-Carr ) For now I've worked out the groove dimensions for the iron rings (which I have). I've gapped them in the bore about 0.006", they are 0.0625" wide and 0.045" thick. I've got a 0.006" groove side clearance and about 0.005"...
  9. comstock-friend

    Stuart Beam Engine Piston Rings

    Anybody have a drawing of the Stuart Beam Engine piston with cast iron rings? The Andrew Smith book (and I assume the original Stuart plans) used packing. The current Stuart plans call for using an O-ring. My casting kit came with two 1" OD rings, 0.0625" wide and 0.0440" wall. Thinking my kit...
  10. comstock-friend

    Fusion 360 replacement

    I'm here to tell you Fusion 360 works. I would have no way to make this part without it. I had a student copy of MasterCam years ago while playing at the local JC, but I ran the machine (a Haas VF3) and didn't do much 3D drawing as I spent all my daytime on a computer at work as an engineer. Got...
  11. comstock-friend

    Stuart Beam Engine Piston Rings

    It's time to put the piston in my beam engine cylinder. My casting kit is the old style matching the construction book by Andrew Smith; in it he refers to a parting tool to 'machine the (piston) packing groove'. However, I have 1" cast iron rings in my hardware kit, and the current Stuart design...
  12. comstock-friend

    Fusion 360 for a beginner

    I'm now to the point that when drawing and/or doing tool paths in Fusion 360 that I just go ahead until something doesn't work, then Google the specific problem and usually a couple of videos or a F360 page pops up with an answer or insight. Couldn't figure why my 1/8" ball mill couldn't pocket...
  13. comstock-friend

    Weird welding problem

    Yes, usually, if you are completely sealing an assembly with weld and it is NOT a pressure vessel, a vent hole is drilled to relieve heat induced pressure. We hot dip galvanized large tubular structures at work; we have to notch or drill holes in two planes at each each of the tubes, since the...
  14. comstock-friend

    Fusion 360 replacement

    I'm staying with F360 for now. I'd still rather draft in AutoCAD, but I need the tool pathing and nc post capability for my Tormach PCNC 1100. Yesterday some things started making sense and today I hope to make some chips!
  15. comstock-friend

    Know where your fingers are---

    We had a project in the shop that used 1-1/4" pipe that loosely telescoped over a 1" pipe axle. The boss was too cheap to buy seamless pipe so the pipe we used had a weld seam on the id. Our machinist soon grew tired of clamping hundreds of these parts in the vise and running a reamer through...
  16. comstock-friend

    Know where your fingers are---

    The JC machine shop was given a calendar by one of the machine tool builders. Twelve months of great shots of old line shaft machine shops and their operator/machinists. You start looking around and there were not many of the guys that had a full compliment of fingers!
  17. comstock-friend

    No. 1 Arbor Press

    Got a Famco #2 at the local steam club's president's auction for cheap (less that HF). I don't have to worry about the frame splitting if I get on it a bit (like I have heard about the Chineseum). Not sure if it was factory, but has a very heavy flywheel that allows you to hammer on the stroke...
  18. comstock-friend

    Is there any place to get BA Bolts / Screws in US?

    I'm pretty well fixed on converting the balance of my Stuart Models to American ANSI machine screws for the following reasons: 1) Sizes are almost identical to the specified BA screw sizes: 2BA is 0.185" dia x 31.4 tpi, an ANSI #10-32 is 0.190" dia x 32 tpi; 5BA is 0.126" dia x 43 tpi, ANSI...
  19. comstock-friend

    Is there any place to get BA Bolts / Screws in US?

    Do you have a link? I'm on the edge, finding the BA hardware included with my Staurt kits a little clunky compared to the US model hex cap screws. I have taps and dies for both series, but most are HSS for the US and carbon steel for the BA's. Of course, what I really want is square head...
  20. comstock-friend

    Collets for End Mills

    I have a manual Bridgeport J head, R8 spindle, and Index 55 with native B&S #9 and R8 recently ground into it (by Wells-Index); it now holds both, and a Tormach PCNC 1100. Thus I use R8/Weldon, R8 collets and the Tormach TTS system with several ER systems. These work in all three mills, although...
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