Stuff you have made today

[Kram]

Fit the wp26 pen torch head on the sherman torch. I will be replacing the button layer.

 

[8ob]

All I'm going to say, is you can have have too much torque. A lightweight car that simply lights its tyres up when you apply a mm of throttle is funny the first 60 seconds . . and absolutely useless ever after. Seven style cars thrive on revs and handling from a low polar moment of inertia. Confuse that by overloading it with torque, and power, and granny on her way to the shops with an open tray of eggs on the passenger seat in her 1.2 Fiesta will humiliate you around roundabouts, or in anything other than bone dry conditions.

Admittedly her Fiesta won't sound as nice

Engine with gearbox has been on a big diet and is a lot lighter than most of the popular four pots, its also mounted a lot lower and a lot further back than with a normal four pot install. Engine is being built as a 7500rpm dry sumped screamer as opposed to a torque monster so it should all work out well, certainly wont get embarrassed in the twisty bits, a mate had a V8 westfield and that thing certainly never had traction,stopping or turning problems, this thing I am building should be an improvement on that.

Bob

 

[Munkul]

finished some steel yesterday

 

[Brad93]

Wh

finished some steel yesterday

View attachment 295264View attachment 295265View attachment 295266

Where is your ce mark

 

[Munkul]

Wh

Where is your ce mark

I'm working for someone else

 

[Brad93]

I'm working for someone else

Made in your workshop, doesn’t matter.

 

[Munkul]

Made in your workshop, doesn’t matter.

Their problem, not mine. I'm selling labour, not steel.

 

[mechman]

This £5 vice was a fun restoration and showed the New MIS members that something that looked like it was well past the saving stage can be brought back to life.

View attachment 295234

A nice, but in a poor state.
Seized.
Broken.
Missing parts.
Badly rusted and pitted.

View attachment 295235

The screw thread nut was broken.

View attachment 295236

The front of the fixed jaw was also broken. But did allow easier access the pull the nail out holding the spring.

To open remove the moving jaw. Soak well oil, warm the fixed jaw up as much as you can.
Then drive in shaped wooden wedges between the fixed and moving jaw.
Drive home and walk away.
The forces and the drew will start the jaws moving.

View attachment 295237

The Nut was brazed up to repair it.
That is not another crack on the RHS, just a casting mark.



View attachment 295238

Replacement jaw made from scrap bar. Hand drilled.
Then case hardened.
Crush some hard wood charcoal into powder, heat the bar to red heat and cover in the powder.

View attachment 295240

All 4 jaw screw holes were striped. 2 before I got the vice. The last 2 by me when removing them.
So they are drilled and taped to M10, the suds are then filled flat and drilled and taped to M6.

View attachment 295241

On the final leg.

View attachment 295242

Down side of gold leaf.
It will show up any flaws.

Oh well.





View attachment 295243

Nice resto, also nice head on the beer.

 

[Dr.Al]

I got fed up with the fact that every time I googled for "gear calculator" to remind myself of the equations for involute gears, most of the resulting links seem to be stuck in the dark ages of diametral pitch and inches. Rather than doing something sensible like keeping on searching and then bookmarking one that used the module system, I made my own (it also generates DXFs or SVGs of the gear profile).

Link: https://www.cgtk.co.uk/metalwork/calculators/gears

Screenshot:

 

[James1979]

I got fed up with the fact that every time I googled for "gear calculator" to remind myself of the equations for involute gears, most of the resulting links seem to be stuck in the dark ages of diametral pitch and inches. Rather than doing something sensible like keeping on searching and then bookmarking one that used the module system, I made my own (it also generates DXFs or SVGs of the gear profile).

Link: https://www.cgtk.co.uk/metalwork/calculators/gears

Screenshot:

View attachment 295318

Thank you

That will be very useful

If you ever write one for bike sprockets it’s would also be handy I’ve often wondered what a plasma one would be like vs a shop bought one. Obviously you’d have to profile it a bit on the lathe but a few afternoons at the mx track buggers them so the ability to cut my own would be damn handy.

 

[Brad93]

I got fed up with the fact that every time I googled for "gear calculator" to remind myself of the equations for involute gears, most of the resulting links seem to be stuck in the dark ages of diametral pitch and inches. Rather than doing something sensible like keeping on searching and then bookmarking one that used the module system, I made my own (it also generates DXFs or SVGs of the gear profile).

Link: https://www.cgtk.co.uk/metalwork/calculators/gears

Screenshot:

View attachment 295318

Another bookmark to your site added

 

[Dr.Al]

Another bookmark to your site added

Do let me know if you spot any mistakes!

 

[Agroshield]

Screenshot:

There is little point in going to splines. If someone is going to use the dxf for cutting a gear on a CNC machine, the G-code that the machine accepts only understands straight lines and circular arcs. So whatever mathematical representation of the involute you use, it will be converted to one of those in the CAM.

A very good addition to the program would be the ability to produce a dxf of a pitch-shifted gear, so you can alter centres or have different size gears meshing on the same centres (this is how the Gamet dual dials work - a 125 and 127 internal gear, but cut on the same pitch circle. It can also be used to make a metric thread dial easier to use; a 35t and 36t gear cut on the same pitch circle). Look on khkgears site for info. on pitch shifting, and being Japanese, they use metric units so your blood pressure will remain steady.

Thank you

That will be very useful

If you ever write one for bike sprockets it’s would also be handy I’ve often wondered what a plasma one would be like vs a shop bought one. Obviously you’d have to profile it a bit on the lathe but a few afternoons at the mx track buggers them so the ability to cut my own would be damn handy.

Are you aware of the document here: https://gizmology.net/sprockets.htm that shows you how do draw one in CAD. See also: https://sprocketeer.software.informer.com/2.0/

 

[James1979]

There is little point in going to splines. If someone is going to use the dxf for cutting a gear on a CNC machine, the G-code that the machine accepts only understands straight lines and circular arcs. So whatever mathematical representation of the involute you use, it will be converted to one of those in the CAM.

A very good addition to the program would be the ability to produce a dxf of a pitch-shifted gear, so you can alter centres or have different size gears meshing on the same centres (this is how the Gamet dual dials work - a 125 and 127 internal gear, but cut on the same pitch circle. It can also be used to make a metric thread dial easier to use; a 35t and 36t gear cut on the same pitch circle). Look on khkgears site for info. on pitch shifting, and being Japanese, they use metric units so your blood pressure will remain steady.



Are you aware of the document here: https://gizmology.net/sprockets.htm that shows you how do draw one in CAD. See also: https://sprocketeer.software.informer.com/2.0/

I was not but I am now thank you very much.

 

[Dr.Al]

There is little point in going to splines. If someone is going to use the dxf for cutting a gear on a CNC machine, the G-code that the machine accepts only understands straight lines and circular arcs. So whatever mathematical representation of the involute you use, it will be converted to one of those in the CAM.

If I'm completely honest, the desire for splines is more about getting a slightly prettier 3D model. I really hope no-one uses my generated DXFs to drive CAM (or at least I hope they don't blame me if it's wrong!). When you extrude a polyline from a DXF into a 3D object (at least in the two CAD applications I tested), you end up with lines along the extrude at each point on the polyline; a spline would remove those lines.

A very good addition to the program would be the ability to produce a dxf of a pitch-shifted gear, so you can alter centres or have different size gears meshing on the same centres (this is how the Gamet dual dials work - a 125 and 127 internal gear, but cut on the same pitch circle. It can also be used to make a metric thread dial easier to use; a 35t and 36t gear cut on the same pitch circle).
Look on khkgears site for info. on pitch shifting, and being Japanese, they use metric units so your blood pressure will remain steady.

Isn't "pitch shifting" the same thing as "profile shifting" (which is already supported). If not, I obviously need to do more reading!

 

[Onoff]

Ready for the next one once the copper pipe has stuck to the cross members. Cleaned the mould out and re-siliconed the internal corners:



Found a bit of slightly bigger mesh than before, not galvanised, so gave it a quick coat of zinc spray.

Sand and dye already in the mixer:



Cement and lime measured out ready.

 

[selectedgrub]

The start of some R2D2 legs

 

[DennisCA]

Rebuilt my forge, no longer has a chimney. I found that coke smokes so little, not at all really, that I don't need it for outdoor forgning. The earlier design prevented access from all sides as well. Now I can put in a long piece of stock easily.

What it looked like before:

 

[Onoff]

Second one done. Used the orbital sander against the sides to vibrate it down this time.

Typically I did only 75% of last time's mix (when I had too much left over) and this time was a bit short! Scraped to the sides and filled the hollow in the middle with a nom. 4:1 mix, no lime, no dye, just whatever it picked up from the drum. Was a bit sloppy tbh. Fingers crossed!

 

[Memmeddu]

Went to pay my car insurance
Gave two of my buzz boxes to a guy who certainly needs them much more than me , didn't wanted nothing for them.
Hopefully someday I'll receive my reward .
I do like to help people