2021 POTD Thread Archive

[GoceKU]

Few days ago my new brake discs arrive, together with the new brake pads and the refurbished brake caliper, i managed to fix my 605, you can see the old disc had lots of heat waves. All the work including the bleeding the brakes took me only an hour. The summer tires are wearing even so the aliment is pretty good, also took it for a drive, the brakes have been slowing me down for some time, it feels like i have 10-15 more horsepower.

 

[pdentrem]

The ‘36 Chrysler Airstream that we bought last year had a Ford something fuel gauge that was not talking correctly with the tank level sensor. The original dash gauge is still in place while the one being used is in the left glove box.


In investigating what is going on, I found that the tank unit reads 50 ohm to 180 ohm which is incorrect for the gauge. Since I want to get the original gauge working, all the remaining work was figuring what was wrong and correcting it.


I have a working spare gauge and in testing, it needs 0 ohm to 76 ohm for full range. The closest is GM @ 0-90 or Ford 10-73. I ordered a GM replacement from Dorman that had the 0-90 ohm range and stripped the electrical part and mounted it onto the tank unit. Move the wiring back to the original gauge and it worked.


I had to make a couple special tools to remove the lock ring and remove the tank unit to be able to work on it. A piece of glass impregnated epoxy board and a empty propane 1# tank. The pictures show the floor access panel to service the sender. Was not interested in dropping the tank so this worked out.
Pierre

 

[silverhawk]

I got to play with some brass today. I very seldomly cut any brass but wow it was so great to machine. Way nicer than even aluminum.

Started on the bandsaw

The large chucks of aluminum are tomorrow’s projects.


Then we moved over to the lathe and started setting my tools up. I had to add about 7 tools to the machine and that took me a few hours to assemble and find all the correct collets.
Here is a look into the tool belt

Here is the tool eye measuring a tool

A look into the tool offset table. The machine reads to .00001” and that’s not any extra zeros

Then a bit of programming which was pretty easy for this part and out popped this.

Od is within .0002” and so is the bore on the id.

Those are m3 tapped holes in the top .5” deep.

That’s just the first operation I need to finish the other side tomorrow.


Quick note for you guys holding very tight tolerances out there.
I finished the od to within .0001” before I cut the bore. After cutting the bore the area around the bore on the od actually expanded by about .0008” that’s almost .001” and on this part that would trash it as it’s a quill and needs to fit it’s housing perfectly.

Luckily I just took another finish pass and that got it down to size

Yes. I have seen many folks say we should vote first, and then bring the outside diameter to spec because of stress relief. I'm glad you were able to so use it. Brass is both easy to work, and yet beautiful when polished. Nice work!

Sent from my SM-T500 using Tapatalk

 

[Ianagos]

It would not have been all that hard for me to have done that but I just didn’t think it would move that much.

Finished the other side today. Came out well

 

[GreatOldOne]

Saturday: machined these plates to become press plates on my benchtop hydraulic press:



The plates are 20mm thick mild steel, 150mm square and I notched them on each of the sides to one degree of another. I also added some dowels underneath to prevent them slipping off the table.

Sunday: a good start on fabricating a head tramming tool. I had a homemade one that relied on sweeping the DTI from side to side, but fancied having an edge precision style one (but didn’t fancy the asking price). It also gave me an excuse to browse for some dedicated clocks for it and oh, hello NOS mitutoyos.



The clocks cost about 1/2 the price of a commercial tool, and are better quality I’m guessing. The beam is a chunk of 25mm square bar I already had. Still need to turn the central shaft and get it pressed in, countersink for some cap head screws and slit down to middle so I can clamp the clocks by the stem… you get the idea.

 

[erikmannie]

I brazed this “kickstand mounting plate” on to a friend’s recumbent eBike today. We used my PM-25MV during the fit up process.

There is so much bronze buildup because that is how he wanted it.

 

[GoceKU]

Well the day in my shop did not go as planned. I started working on a lift kit for the little niva, but mid way thru i had a delivery of some steel stock that i've been waiting on for a future project. And in making space to store it i injured my back lifting. This time isn't as bad as 2,5 years ago, back then i was paralysed first two days. Today i sort of walked it off, but first half an hour was pretty hairy, cold sweat, dizziness, almost lost consciousness, and pain to no end. Went visited a doctor got two injections, still hurts and i'm walking like a robot, but is way better then first time. On the lift kit, i only made few of the spacers i'll have to rest for few days before i get back to doing all my usual tasks, i'll still will be going to both my jobs but the rest of the day i'll be resting.

 

[brino]

@GoceKU ,

With previous injury we should be even more wise about future problems.

There is no shame in hiring a local young buck to do the offload!
He would be glad for the pay, and you can just supervise.

-brino

 

[DavidR8]

A few weeks back I bought a 6” 4-jaw chuck to use on my 6” rotary table.
It was a rear mount chuck but I figured that I could drill the holes through to the face and then counterbore for SHCS.
Worked out well.
Just need to make some T-nuts to fit with 1/4” holes.

 

[hman]

@GoceKU - Very sorry (and concerned!) to hear about your re-injuring your back. My very best wishes (and I'm sure this goes for everybody here) for a complete and speedy recovery. Take care of yourself!