Search found 84 matches

by Wolfgang
Sun Jan 27, 2019 8:44 pm
Forum: General Discussion
Topic: magnetic parallels / transfer blocks
Replies: 1
Views: 635

Re: magnetic parallels / transfer blocks

I see magnetic parallels that are alternating stacked plates of brass and steel, and I see some that are blocks of brass with steel pins in them. Any difference between the two types? Steve To use the parallel plate blocks the plates must be aligned parallel with the poles on the chuck. Thus you ca...
by Wolfgang
Sun Jan 27, 2019 8:36 pm
Forum: General Discussion
Topic: Best tap for aluminum
Replies: 12
Views: 1340

Re: Best tap for aluminum

Probably one of the most distressing things that can happen is having a small tap break in a piece you have spent hours machining. I've tried HSS thread cutting taps and thread forming taps in 2-56 to 6-32 thread sizes and get some breakage, so my question is: what is the best, long lasting tap, ei...
by Wolfgang
Sat Dec 29, 2018 7:34 pm
Forum: General Discussion
Topic: What is it?
Replies: 28
Views: 2670

Re: What is it?

Flattened the tips of both drills. Yes, the process removes the sharp corners of the drill bit, but the process still works. I just tried it, using a 1/4" dia. commercial stellite drill and an O-1 tool steel plate hardened to Rc 60 - 62. Unfortunately 1000 rpm is too low, I put my drill press on to...
by Wolfgang
Fri Dec 28, 2018 7:10 pm
Forum: General Discussion
Topic: What is it?
Replies: 28
Views: 2670

Re: What is it?

Given to me 30 years ago by a retired Toolmaker, only markings are Doloro Stollito 1/2 Dia. It is a stellite drill, and the notches in the straight edges are to improve chip evacuation. This drill is useful for drilling quite accurate holes in HARDENED steel; no need to anneal anything if you forgo...
by Wolfgang
Tue Dec 04, 2018 9:30 pm
Forum: Live Steam
Topic: Night Running & Lights?
Replies: 33
Views: 5043

Re: Night Running & Lights?

Here are some pics of the headlight and its construction. Pic 1 is headlight on loco. The mounting bracket is 304 stainless steel to reduce heat conduction. Pic2 is a front quarter view clearly showing the LED. Pic 3 is an elevation view showing the parts and assembly. The heavy block on top clamps ...
by Wolfgang
Tue Dec 04, 2018 5:53 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 47
Views: 4961

Re: HEIGHT Gauge question

Wolfgang that may be okay for you in your home shop but it wouldn't fly if you worked as a quality inspector like I used to. You had to use the appropriate tools. No hair splitting permitted. ;) I still do it this way for the stuff I hack out for myself. When I worked I used height gauges and an in...
by Wolfgang
Tue Dec 04, 2018 5:49 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 47
Views: 4961

Re: HEIGHT Gauge question

vhg.jpg Your height gage must be different from this. The bottom of the scriber holder is most likely not able to be zero if it were able to reach the surface plate. Adding a tool bit or gage block would still not fit your description. Turning the scriber over would not work either. Am I not able t...
by Wolfgang
Tue Dec 04, 2018 4:39 pm
Forum: Live Steam
Topic: Night Running & Lights?
Replies: 33
Views: 5043

Re: Night Running & Lights?

DianneB wrote:
Tue Dec 04, 2018 7:26 am
What kind of "3 watt warm light LED" did you use? Was it an automotive bulb?
The LED is from DIGIKEY, part # 516 1975 5 ND. Description: Warm Light 120 deg SMD 3 Watt LED. w
by Wolfgang
Tue Dec 04, 2018 12:20 pm
Forum: Live Steam
Topic: Night Running & Lights?
Replies: 33
Views: 5043

Re: Night Running & Lights?

DianneB wrote:
Tue Dec 04, 2018 7:26 am
What kind of "3 watt warm light LED" did you use? Was it an automotive bulb?
It is not an automotive bulb; my turbo-generator does not produce 12v.

I need to dig out the info you ask for; I also have some pics of the construction I can post when I find them.:-)) w
by Wolfgang
Tue Dec 04, 2018 12:06 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 47
Views: 4961

Re: HEIGHT Gauge question

I'm having a bit of difficulty visualizing your process. If you are measuring from the surface plate to the bottom of a feature, then I can see how your procedure can work. If you are measuring to the top of a feature then I have difficulties. Any height gage I am familiar with does not have a 'top...
by Wolfgang
Mon Dec 03, 2018 5:43 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 47
Views: 4961

Re: HEIGHT Gauge question

Methinks that a good quality vernier gauge such as Mitutoyo can be read to 1/2 thousands because of its widely spaced scale markings. As Harold stated above you need a good quality surface plate plus angle plate etc. etc. Also a surface gauge to mount your good quality Test indicator on. Use the Tes...
by Wolfgang
Mon Dec 03, 2018 5:17 pm
Forum: Live Steam
Topic: Night Running & Lights?
Replies: 33
Views: 5043

Re: Night Running & Lights?

For a headlight I use a 3 watt warm light LED with a custom turned aluminum reflector. My son did the arithmetic for a parabolic reflector and printed a table of Y and Z coordinates with which we turned via 'armstrong CNC' with .010" steps, said reflector. This reflector is about 1" dia. and perhaps...