Fabricating and installing a 300 mm riser block

[Ches Green UKParticipant @chesgreenuk]

Not exactly home workshop equipment but an interesting insight in to how the 300 mm high block was made (out of 20 mm plate), welded and skimmed…. https://www.youtube.com/watch?v=roMzviZ4p6I

That's a heck of a parting off tool!

Part II (the installation) to follow soon, I believe.

Ches

[Ches Green UKParticipant @chesgreenuk]

Increasing the working height of a K&W Facing Borer

[David George 1Participant @davidgeorge1]

Having worked similar machines it gives me a feeling of how small my little machines are, what I am missing, and what we used to do to to arrive at a finnished job.

David

[sean logieParticipant @seanlogie69385]

Posted by Ches Green UK on 29/07/2022 10:42:36:

Not exactly home workshop equipment but an interesting insight in to how the 300 mm high block was made (out of 20 mm plate), welded and skimmed…. https://www.youtube.com/watch?v=roMzviZ4p6I

That's a heck of a parting off tool!

Part II (the installation) to follow soon, I believe.

Ches

Kurt has some wonderful older machines that will soon be a regular part of his channel .He won't please the purists but his end results are what matter . The KW facing borer did a fine job of facing the riser .

Sean

[Ches Green UKParticipant @chesgreenuk]

David, Yes, I occasionally worked on larger machines in my youth…the big mills I was fine with, but the big lathes I was very wary off.

Sean, Kurt seems one of these motivated people that gets things done. I'm curious to see where/how the block fits into the Borer. I imagine the original designers of the Borer did their stress calcs on all bolted interfaces…I hope the riser lasts the course…it certainly looks substantial.

Ches.

[David George 1Participant @davidgeorge1]

I worked on a huge old flatbed lathe to turn recceses in gearbox covers for a Dosco heading mining machine. The plates were 5 feet long about 2 feet wide and 1/2 inch thick with three overlapping recesses in one side about a 1/4 inch deep The lathe had riser blocks about 18 inch too swing the plate the center recess was ok ish but the outer recesses were a bit hairy swinging a 5 foot plate in an offsett jig bolted to a faceplate like a large blade. There was a back guard with a small radial upstand but there was no front cover. At full swing it had a circumference of about 8 feet swing. I also had to make a sine table with a 3 feet square top and bottom plates 2 inch thick plates, to machine a door for a nuclear reactor made from 1 inch thick stainless steel plate fabrication hollow and filled with lead. It weighed about one and a half tonne.

David

Edited By David George 1 on 30/07/2022 09:24:16

[Ches Green UKParticipant @chesgreenuk]

swinging a 5 foot plate

That must have been quite a thing. Was there a counterweight, or was the cutting speed low enough that one wasn't needed?

Ches

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