Search found 1470 matches

by Rich_Carlstedt
Thu Apr 11, 2019 7:34 pm
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 884

Re: Measuring a diameter without a caliper

Accuracy is dependent on several things . 1. Have a sharp point on both legs of the caliper. You might want to even stone or file them parallel to the beam . this would also ensure they are the same length and have a sharp 90 degree corner ( only a few thou is needed !) CHECK your clamp screw . On s...
by Rich_Carlstedt
Wed Apr 10, 2019 9:40 pm
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 884

Re: Measuring a diameter without a caliper

Applying the numbers I got from the above quick test . I get a result of 4.494" and I then miked the round with a 5 inch mike and got 4.496 which shows a accuracy of 99.9589 %
Rich
by Rich_Carlstedt
Wed Apr 10, 2019 9:23 pm
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 884

Re: Measuring a diameter without a caliper

Rich, Your instructions made no sense to me. .......... Dave Dave, Here is a picture. Very simple solution, no welding , no oversize instruments Just use shop calipers (with a sharp point(s) and measure the depth of the beam. In the attached picture, my Beam is 1.548 deep and with a .869 (Precision...
by Rich_Carlstedt
Wed Apr 10, 2019 1:28 pm
Forum: General Discussion
Topic: Measuring a diameter without a caliper
Replies: 19
Views: 884

Re: Measuring a diameter without a caliper

When you say "without a caliper" I assume you mean that you do not have one big enough ? But, if you have a 6 inch caliper, you can do it. Take the caliper and open it all the way, and then place the beam against the column and close the jaws while holding the beam tightly ( and LEVEL !) against the...
by Rich_Carlstedt
Mon Apr 08, 2019 9:28 pm
Forum: Live Steam
Topic: Little engines 1" line of engines
Replies: 33
Views: 3461

Re: Little engines 1" line of engines

What Jack said is so important !. I posted this on another thread earlier, but the thought must (!) be realized by members of our hobby. This was in response to criticism (right or wrong ) about a vendor: This is a Hobby, never forget that, and appreciate what you have today, it may not be there tom...
by Rich_Carlstedt
Sun Mar 24, 2019 1:32 pm
Forum: Live Steam
Topic: Jesse Livingston
Replies: 10
Views: 1015

Re: Jesse Livingston

Truly a nice guy.
Have not communicated with him for many years, but he was special.
RIP Jesse

Rich
by Rich_Carlstedt
Sun Mar 24, 2019 11:18 am
Forum: Live Steam
Topic: Tom bee
Replies: 33
Views: 3415

Re: Tom bee

Hey guys, maybe all the complaints are true, or they may not, but you have to cut some slack for hobby suppliers. Yes, you can order from Amazon and get it tomorrow, but be a hobby supplier yourself and try to get a foundry to pour just 6 "small" castings, or wait until your shop comes up with a new...
by Rich_Carlstedt
Sat Mar 16, 2019 10:58 pm
Forum: Home Shop CNC
Topic: Thread Milling
Replies: 30
Views: 5344

Re: Thread Milling

I have done many internal threads by milling . I started in the early days by hand grinding a single flute carbide Router bit and putting a relieved 'V" in the bottom. Worked fine, but now I buy single point thread cutters . I like centering on the hole and going to the bottom first and doing a reli...
by Rich_Carlstedt
Sat Mar 09, 2019 6:55 pm
Forum: General Discussion
Topic: making a cast iron riser block
Replies: 7
Views: 728

Re: making a cast iron riser block

PS
If you make your own longer screws, use "Stress Proof steel ( LaSalle Steel) for stock
Easy to cut and hold beautifully.
Rich
by Rich_Carlstedt
Sat Mar 09, 2019 6:52 pm
Forum: General Discussion
Topic: making a cast iron riser block
Replies: 7
Views: 728

Re: making a cast iron riser block

Cast Iron has 10 times the vibration killing ability over steel. You never see a cast iron tuning fork ! Aside from that and it possibly being cheaper, Steel is fine as you load the riser under compression and the sandwhich parts are Cast Iron . We made a couple of risers at work , like 5 and 8 inch...
by Rich_Carlstedt
Wed Feb 13, 2019 7:28 pm
Forum: General Discussion
Topic: GE 44 tonner
Replies: 13
Views: 2131

Re: GE 44 tonner

If HO was 1/96 scale then 1/8" to the foot would work, but HO is 1/87 scale or 1 ft equals .13793 of an inch. 2.5 inches divided by .13793 equals a multiplier of 18.125136 Thank You Alco ! I was always under the impression that it was called "HO" because it was HALF of "O" gauge-therefore HO. Sever...