Search found 1058 matches

by John Hasler
Thu Feb 21, 2019 4:19 pm
Forum: The Junk Drawer
Topic: How to Lock Screw in Skillet Handle?
Replies: 21
Views: 366

Re: How to Lock Screw in Skillet Handle?

I fry scrambled eggs with onions, mushrooms, and cheese in my cast-iron skillet frequently and clean it with no difficulty. Run the steel spatula around it once to break loose anything stuck (usually isn't anything), wipe it out with a paper towel, and put it on the back of the stove ready for next ...
by John Hasler
Wed Feb 20, 2019 9:35 pm
Forum: The Junk Drawer
Topic: Engineers really know their stuff
Replies: 111
Views: 14716

Re: Engineers really know their stuff

Sometimes you need to take a close look at these repair procedures. Seems like every second procedure in the shop manuals for my old tractors starts with "First split the tractor". Then it lists the special-purpose stands and fixtures that they expect you to do that with and which, combined with the...
by John Hasler
Wed Feb 20, 2019 7:39 pm
Forum: The Junk Drawer
Topic: How to Lock Screw in Skillet Handle?
Replies: 21
Views: 366

Re: How to Lock Screw in Skillet Handle?

Sharpen her stainless steel knives on the belt grinder. Less work and it's not like you could ruin them.
by John Hasler
Wed Feb 20, 2019 6:25 pm
Forum: Riding Scale Railroading
Topic: charging two batteries in series
Replies: 7
Views: 167

Re: charging two batteries in series

You can equalize your batteries by connecting them in parallel and charging them that way. As Dianne says, though, they must be well matched. Once equalized they can be charged and discharged in series.
by John Hasler
Wed Feb 20, 2019 12:42 am
Forum: The Junk Drawer
Topic: How to Lock Screw in Skillet Handle?
Replies: 21
Views: 366

Re: How to Lock Screw in Skillet Handle?

Use the Loctite primer. It makes a difference on ss and aluminum. I'd also stake the threads as earlgo suggests.

Steel and aluminum being temperature cycled is a bad combination, though. Can you replace either the nut or the screw so as to have matching materials?
by John Hasler
Tue Feb 19, 2019 11:58 pm
Forum: Riding Scale Railroading
Topic: Train detector, welded rails - ideas???
Replies: 14
Views: 274

Re: Train detector, welded rails - ideas???

The "car detector" I mentioned is the same as a traffic signal loop detector. BTW the PLCs I have had experience with are far from delicate. I think they are too pricey for this application, though. Multiple LED-phototransistor pairs could be wired with all the LEDs in series and all the phototransi...
by John Hasler
Tue Feb 19, 2019 7:39 pm
Forum: Riding Scale Railroading
Topic: Train detector, welded rails - ideas???
Replies: 14
Views: 274

Re: Train detector, welded rails - ideas???

Looking for inductance change should work but I think you want the axis of your coil vertical. When a train is present part of the flux path that is normally entirely through air will be through iron. You might be able to modify a metal detector. A car detector of the sort used at parking lot entran...
by John Hasler
Tue Feb 19, 2019 9:04 am
Forum: General Discussion
Topic: Softjaw question
Replies: 8
Views: 236

Re: Softjaw question

Ok, I'm sure this is going to be a stupid question but I'm drawing a blank, so here goes. A job requiring softjaws is about to commence. I have softjaws and a spider but how does one measure the diameter of the softjaw cut. All of my micrometers measure at 180 degrees whether they be calipers or mi...
by John Hasler
Sun Feb 17, 2019 2:15 pm
Forum: Welding
Topic: Spot welding voltage & current
Replies: 2
Views: 101

Re: Spot welding voltage & current

Spot welders are quite different from arc welders. They rely on resistance heating in the parts being welded rather than on arc heating. This requires that you firmly clamp low-resistance contacts directly at the spot where you want the weld. The open circuit voltages are quite low (on the order of ...
by John Hasler
Fri Feb 15, 2019 8:47 pm
Forum: Lathes
Topic: Spindle Frequency?
Replies: 1
Views: 158

Re: Spindle Frequency?

We need to know more about your setup.
by John Hasler
Thu Feb 14, 2019 10:06 pm
Forum: Milling Machines
Topic: Round Ram Upgrade
Replies: 24
Views: 538

Re: Round Ram Upgrade

Depends on what you mean by a "true" rotary converter. Driving a synchonous three-phase generator with a DC motor controlled so as to keep the frequency correct would give you perfect separately-derived power. Converters built using a single three-phase motor, some capacitors, and some relays can wo...
by John Hasler
Wed Feb 13, 2019 11:53 am
Forum: Milling Machines
Topic: Round Ram Upgrade
Replies: 24
Views: 538

Re: Round Ram Upgrade

A rotary converter provides pretty good corner-grounded three phase.