Lyman MK4 Power feed on Bridgeport

conant · Oct 30, 2014

Is there an extension handle or other brackets and extension that provide for a handle for the table screw on the left end where the Lyman unit mounts?

RE:http://www.practicalmachinist.com/v...story/lyman-mk4-power-feed-bridgeport-285381/

I heard mention but I am not sure what it would look like.
A simple stub shaft with a handle?

Help please.

conant · Nov 1, 2014

Anyone have any advice on this?

abarnsley · Nov 2, 2014

Are you left handed???

Looking at my MK7..

You could make an extension, but it would likely back off, if turned in reverse..

The table x axis screw, has just a simple threaded end.. You would need to make a keyed x axis spur drive gear, with a keyed shaft extension (flange mount to gear), as a two piece unit. Pretty simple job..

The gear needs to be locked to shaft with end nut, then flange screwed to gear,with handle extension..

conant · Nov 3, 2014

I will take a look at that. I take it there was never an option for this available? Strictly custom?

Thanks for the tip.

abarnsley · Nov 4, 2014

My Production Tool Supply catalog showed an extension handle kit. Fit both MK4 and MK7... part number LD-HCE.

Only problem, it is a 1994 catalog...

Factory extension was just a simple shaft (with hand crank of course), internally threaded 1/2 20, to replace the nut on end of leadscrew.. Nothing to keep it from unscrewing, when LH crank is turned clockwise....

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Lyman MK4 Power feed on Bridgeport

conant

Stainless

conant

Stainless

abarnsley

Titanium

conant

Stainless

abarnsley

Titanium

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