Cromwell S800 Mk3 lathe

[RodF]

Have started to reassemble the lathe. I need to make the apron clamps to continue. They don't seem to work like jibs, they seem to be sliding fit. So i measured it up as best I could and started machining. Results so far are promising and I will fit each one as I go. Starting to get a feel for how she will look with the tailstock on (but not fitted), the chrome will be pretty bingy. Drive belt could be months away so I am going with plan B which is splicing. Any tips welcome.

 

[RodF]

Got the apron retaining blocks drilled and tapped. The are a nice fit just a little tweaking to do. I can feel the bed is slightly more worn closer to the chuck (as you would expect).

 

[RodF]

Had to chamfer the corners of the apron retaining blocks to clear the drive screw. Carried on with assembly and discovered I need to make a fitted key for the right hand feed drive. I have some 1/8" gauge plate for it and will also cut some for the top slide jib I need too.

 

[RodF]

Made the key. Am getting a bit ahead of myself here. The apron action feels too tight so I will go back and get each part nice and smooth.

 

[drs23]

It seems to be coming along swimmingly. Thanks for the update and please keep us posted with your progress. With pics of course. )

 

[RodF]

Thanks Dale, I'm on a roll, however work will intervene at some point soon.
Started on the drive gear on the end of the spindle. The poor old Myford is going to be the instrument of its demise. I might do it up too before I sell it.

 

[RodF]

Cut the gear. Went well till we had a power cut while I was doing the last tooth. Had to wait an hour to finish it. Now I have to make a press and insert to cut the keyway.

 

[RodF]

OK so I need to make a broaching press. Nothing fancy as I only need to do a few. Here is progress so far. Still need to make a hole in the base plate for the broach to pass through. I have a large bar to drive it with.

 

[RodF]

Finished off the broaching press. Last job was to drill the hole for the broach to pass through.

 

[RodF]

Made the broaching guide. A bit tricky getting the depth right but it came out fine.



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Did the broaching. It required quite a bit of force but I was being pretty careful. Put the shim in and did the second cut, it was a little bit easier. Got a good result, just need to drill and tap for the grub screw.