Results 31 to 45 of 78
Thread: Mystery Project. What is this???
-
12th Jan 2022, 09:24 PM #31Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Most ingenious answer: hand-pump piston. It certainly is that shape...
but no, it is much more mundane –
the holder for a cheap diamond dresser, for a surface grinder.
IMG_2377.jpg IMG_2366.jpg
The dressing rod was about $3 shipped:
https://www.aliexpress.com/item/4000340991244.html
and someone convinced me to have a solid holder - nearly as tall as the rod. I found a slug of cast iron the right size, but it was quite heavy, so I needed to machine some weight off it for safe handling.
The web page said the diamond should be trailing by 15°, so I made the top slope away at that angle, to help me line up the tangent of the wheel for the trailing position on it.
-
13th Jan 2022, 08:08 AM #32Diamond Member
- Join Date
- Sep 2006
- Location
- Mallacoota,VIC,Australia
- Age
- 53
- Posts
- 1,010
There's no way I would have guessed that and got it right. That's a good idea , basically a good size weight that will stay on the magnetic chuck and hold the diamond dresser to dress the wheel.
All The Best steran50 Stewart
The shortest way to do many things is to do only one thing at once.
-
13th Jan 2022, 08:27 AM #33Golden Member
- Join Date
- Sep 2008
- Location
- Riddells Creek, Vic.
- Posts
- 838
It's hard to see in the photo but is the shank of the diamond tilted to 15 degrees also?
-
13th Jan 2022, 05:38 PM #34Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
-
13th Jan 2022, 06:01 PM #35Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
No. I thought about it, but in the end machining simplicity won out:
surface grinder dresser.jpg
-
7th Feb 2022, 09:09 PM #36Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Mystery 6
Toolmaker neighbour needed some help churning some thingies out.
He claims to be too busy to set up a CNC programme and machine!
Load some UHMW (ultra high molecular weight polyethylene) round rods,
drill out to 9.2mm, and machine a step:
IMG_2482.jpg IMG_2484.jpg
(It was very hard to turn an accurate OD. A big cut works OK, but a small cut fuses the plastic together, and a tiny cut just pushes the plastic away from the tip and polishes a few thou off. Maybe I should have used HSS?)
Machine a chamfer, and part off:
IMG_2485.jpg IMG_2486.jpg
Then turn around in the chuck, and clean up the parted face:
IMG_2487.jpg IMG_2489.jpg
These little Holman hose thingies fit in them:
IMG_2490.jpg IMG_2491.jpg
so they have something to do with fluids.
What are they for?
-
7th Feb 2022, 09:15 PM #37Most Valued Member
- Join Date
- May 2011
- Location
- Murray Bridge S Aust.
- Age
- 71
- Posts
- 5,959
They look like a type of hose clamp, maybe for higher pressures???
KrynTo grow old is mandatory, growing up is optional.
-
8th Feb 2022, 10:01 PM #38Most Valued Member
- Join Date
- Mar 2011
- Location
- Southern Flinders Ranges
- Posts
- 1,555
They look like Type92 rack insulators.. but I’m going to suggest they are to stop coolant pipes chafing in a housing or something similar
-
9th Feb 2022, 10:22 AM #39
Components for a multi point machine oiling system, maybe.
Grahame
-
14th Feb 2022, 09:27 PM #40Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Grahame is sort of close.
They are fluid transfer hose couplings, for power steering racks:
IMG_2488.jpg
I think on these racks, there are 4 hoses. Two pressure hoses that move the ram+rack,
and two sort of drain/balance hoses, that collect any fluid that leaks past the main seals,
and balance the air pressure so the dust boots don't blow out.
I suspect fluid goes back to the reservoir.
These were just prototypes for testing, before the toolmaker gets around to the CNC job.
-
25th Feb 2022, 10:58 PM #41Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Mystery 7
I didn't machine these, but they are an interesting shape:
IMG_2607.jpg IMG_2611.jpg
(the brass things, not the home made spanner, or old mic.)
Most of the things have a curved chamfer on one side, and the through hole is offset from the middle of the rod and the straight side of the chamfer.
Anyone want to guess their purpose?
-
26th Feb 2022, 12:27 AM #42
My guess would be clamping something to something else that is round. Shallow disk is fits into a recess and a bolt passes through it to the longer part with the semicircular cutout, bolt tightens and draws the larger part against something with a matching radius to clamp the two objects together. Obviously, there is a fixture (cast, forged or machined) that completes the system and has a round opening to accommodate the circular material that the unit is clamping to.
I know it is about as descriptive as the wording in a patent, pure gibberish but the best I can do after midnight without breaking out the CAD and doing a drawing.I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
-
26th Feb 2022, 02:49 AM #43
-
4th Mar 2022, 10:46 PM #44Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Baron is sort of close - they are for clamping something round !
I can't find a photo for the machine they are off, but it is a big old spot welder. They are the electrode clamps.
-
30th Mar 2022, 09:57 PM #45Diamond Member
- Join Date
- Aug 2019
- Location
- Revesby - Sydney Australia
- Age
- 57
- Posts
- 1,196
Mystery 8
Grab a mystery plastic(*) disc in the Hercus, to machine a step on one side:
IMG_2741.jpg
using an assortment of spacers and a threaded rod through the spindle.
Then, bore out to the required 5/8":
IMG_2742.jpg
and carefully grab on the step, to machine the other side:
IMG_2743.jpg
* The shavings came off as light grey, and even the Aluminium cutting carbide left a matt finish. Its almost like glass-filled Nylon, but it doesn't seem that tough.
I actually made a second one from black Delrin. Much easier to machine than whatever the first one was made out of, and a lovely shiny finish.
Anyway, what are these for?
(hint - it is to repair something on a compressor)
Similar Threads
-
Mystery Car
By Goggomobile in forum AUTO RESTORATIONReplies: 9Last Post: 13th Mar 2016, 01:59 AM -
Mystery item.
By stix012 in forum EBAY, GUMTREE, and other off forum sales sitesReplies: 2Last Post: 1st Mar 2016, 06:44 PM -
a mystery Lathe
By thorens in forum METALWORK GENERALReplies: 16Last Post: 27th Feb 2016, 11:05 PM -
mystery tool
By thorens in forum METALWORK GENERALReplies: 14Last Post: 29th Jun 2015, 01:10 AM -
Mystery referral
By zenwood in forum FORUMS INFO, HELP, DISCUSSION & FEEDBACKReplies: 0Last Post: 26th Aug 2005, 05:32 PM