Taper Turning Attachment for Myford ML10 Patterns

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Meldonmech:
Hi Guys, Thanks for your comments.
Pete, there is draught on the ribs, as you suggest it is photographic distortion. I have only used Delrin for circular bearings and was unaware of it's poor adhesion properties. I will use a mechanical fixing if I use Delrin.
Matthew, Al to steel would be a much simpler combination, will seriously consider.
Rob, I will be making a loose piece for the step in the large bracket, to aid the moulding when ramming the drag.
This bracket is the largest casting I am about to attempt, and I am not sure where to position the in gate, and out gate, to ensure a satisfactory pour, can you advise.

Cheers David

hopefuldave:
I like that taper attachment, very similar to the one on my Holbrook. Will you be fitting a screw adjuster for the "opposite" on the sine bar too? I think the.Monarch 10EE had a graduated micrometer collar on its taper attachment, might be worth a Google (and doing the geometry!)

I'm very rusty on casting, so take with a pinch of salt, but were I casting that I'd probably put the in gates where the ribs meet the vertical mounting plate (3 of 'em) and run a tapered runner parallel with the mounting plate, below the level of the casting so it filled from the bottom. I'd put risers at the top of each rib/plate junction and vents at the far ends, the far ends would probably cool fastest (most surface for mass of metal) so the ' corner' is where the worst shrinkage would be, thus where you need a nice fat riser or three to supply more metal.

I may be very wrong though, I often am...

I have the promise of a nice 200 litre! steel drum so I may soon have.the beginnings of a furnace and the prospect of some ally casting, I'd like to make a few replicas of fittings on the Holbrook (eg a toolbox bracket aping the one for the collet box) and perhaps a body for a headstock dividing attachment (to go outboard of the headstock).

I think I'll try lost foam casting first, as my woodwork's not as good as your, not nearly!:

Does anyone have links to a simple waste oil burner, one that doesn't need lots of high-pressure air or oil pressure?

Dave H. (the other one)

Pete.:
I have a freshlycleaned and re-assembled 10EE one right here on the bench. If you'd like any measurements off it just holler.

Rob.Wilson:
Hi David

Are your flask large enough to have runners and a gates down each side of the casting ? so that you could gate into the bracket face were it bolts to the lathe bed and into the section were the guide is mounted .

Rob

Meldonmech:
Hi Rob,
Must check my flasks, have a feeling things may be a tad too tight, may have to make a new flask.

David

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