Stuff you have made today

[Johnnybravo]

That brings back memories. Designed and testing rubber mouldings for 10 years. Make a single cavity, 6 samples then it was scrap.

"Uniroyal" flashless transfer moulding was the best. Struggled getting toolmakers anywhere in the world to make yet a bloke in a farm in Hereford had it down to a fine art. Stunning tooling.

It's a quick and relatively cheap way to reproduce low volume parts I need . A days machining and a couple of days molding gets me the 226 seals I need. Photos taken before I machined the trim grooves into the tool.

 

[pressbrake1]

It's a compression moulding tool, not an injection moulding tool. Cut your bits of uncured rubber from a slab, weigh them , put them in the mold and slowly close it. Mold heated to 160 degrees and in a 30 ton heated press

Please teach me master!

 

[cardiffrob]

Turned one of these into...

 

[slim_boy_fat]

For?

 

[cardiffrob]

Morris Minor, or any A-series. It was a case of slitting the fins away and then using one of them thar curvable bladed file thingies to flatten it down before running lots of wen-n-dry over it. Just looks nicer and is easier to polish up. I have a Shorrocks Blower and a rebuilt 948cc engine to finish off.

 

[Hood]

Made a housing with seal and oilite bush from Acetal, it is for a finning machine.

Pic with shaft and blade inserted.

Made another deck wash fitting.

I polished this one while I was waiting on the plasma cutting some Alu.

The Alu was for 2 donkey engine boxes.

 

[pressbrake1]

My new folder had a broken link arm. Nothing clever and looks over kill but I didn’t want to waste time chomping off metal that could stay there. 1/2” key way, bolt is just retainer as original

 

[selectedgrub]

 

[Fintray]

Made a housing with seal and oilite bush from Acetal, it is for a finning machine.

That name brings back painful memories, my right thumb still has the scar...

 

[stuvy]

Was a right pain to make this as it needed to clear of the windscreen wiper and the boom not only comes up but slews 90 degrees to the left and 45 to the right so can end up touching bits hence the cut outs

 

[Hood]

Today I made a 1. 3/4" dia f51 duplex shaft into a 42mm dia shaft, well almost anyway.

The shaft was turned down for 1m of its length, my lathe doesn't turn true over that length due to the lathe needing levelled and I got sick fed up of levelling it a long time ago due to the floor in the workshop constantly moving, it is hollow underneath the concrete in parts and after a week or so the level of the lathe has changed enough to knock it out. The first cut was taken and over the 1m length there was 0.7mm difference but as it is a CNC it is fairly easy to programme out any taper.

This was the end results, 0.001mm under at the chuck end and 0.003mm under at the tailstock end, plenty good enough for a rudder shaft

 

[Shox Dr]

@Hood how do you do that? Give it the dims, and it works ot out? Very cool

 

[Hood]

@Hood how do you do that? Give it the dims, and it works ot out? Very cool

Yes, more or less.The tools are all set up in the tool table so the control knows where they are or at least very close. So when I take a cut I can then measure the diameter either end and say it is 1mm bigger at the chuck end then all I need to do for the next cut is tell the control to move the distance in Z for the next pass but increase the end point by 1mm, so for example
GOX42Z2 (rapid move the tool to 2mm from the end and at 42mm diameter)
G1 Z-1020x43f0.15 (starts feeding at 0.15mm per rev and over the distance of 1020mm it will increase the diameter by 1mm)

Edit, should have been 1mm smaller at the chuck end.

 

[pressbrake1]

@Hood how do you do that? Give it the dims, and it works ot out? Very cool

It’s s bit like how you can grid calibrate a milling machine to near jig borer positional accuracy even though most cnc mills are not made close. The magic of computers

 

[Jlg]

Not made but I took my jetski apart yesterday to se why the engine made a bang and locked up on Sunday what do you think a bit of jb weld or ducktape

 

[Chillitt]

The lintel was cracked years ago but no one worried about that as it was all covered up. Looks a bit better with some metal under it, and there's somewhere for the tools now. Needs a bit of tidying up and a plate making for the flue now, but its getting there.

 

[Fintray]

Not made but I took my jetski apart yesterday to se why the engine made a bang and locked up on Sunday what do you think a bit of jb weld or ducktape

Never a good sign when the internals become external, bit of a push for JB Weld and /or Ducktape.

 

[Jlg]

Never a good sign when the internals become external, bit of a push for JB Weld and /or Ducktape.

Sadly it is what's worse is it was only serviced 5 hours ago and it's only 6 months old

 

[8ob]

Not made but I took my jetski apart yesterday to se why the engine made a bang and locked up on Sunday what do you think a bit of jb weld or ducktape

I think an ebay advert: Jet ski for sale, non runner, possible in need of a service.

Bob

 

[Jlg]

I think an ebay advert: Jet ski for sale, non runner, possible in need of a service.

Bob

Na eBay would refund the buyer luckily for me it's still in warranty as the engine on it's own is 4K to replace plus the bottom hull as the rod punctured it is nearly 2k