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Alternate Toolpost - Toolholder:
Made from a scrapped gooseneck, part of an automotive towbar.
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Showing the (towbar) gooseneck & the two pieces sawn from it.
Original holes just got included in the final items.
I can use from 1/4" to 1"-sq tooling (by using or not
using the packing piece).
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The piece on the left was bored out to fit on the topslide. A step
made to accommodate different thickness tooling. Finally machined to
same dimensions as square on top of the compound slide. Ignore the
hole shape, it's just a relic (hole) from it's 'towbar' days. |
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The second piece of plate, was machined to shape & size, a hole
bored (until it hole was smooth - original tow ball hole). A 1"
piece of 1-1/4" bar was machined to fit the hole, 1/2" long.
This was then pressed into the flat plate section, until fully
engaged. A hole then drilled & tapped for the adjusting bolt to
be installed.
The completed unit is shown here, in place on the topslide, including a
bit of packing & the lock-down lever.
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Fabricated Dog Drive Plate:
Both the Dog-plate & the faceplate were made from 3" bar & a
couple of homemade weightlifting weights (steel 'biscuits').
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I had to make this small faceplate / dog-plate first, so I could use it
to make a full-size faceplate - It was the largest I could machine on the
smaller, Advance lathe.
It's made by welding a section of round bar into a 1" thick piece
of steel plate, boring & threading the centre to fit on the Ta Shing
'nose' (2" x 8-t.p.i., Whitworth form).
Slots were milled as shown - 4 enclosed slots to use as a faceplate
& 2 long slots for driving lathe dogs.
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The weld might look a bit rough, but I have no doubts it'll be strong
enough. The unit is welded on both sides of the plate.
Of course, always do all the welding, then all the machining - welding
will cause distortion, that can then be machined out.
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Fabricated Faceplate:
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The large (9") faceplate during facing off.
It's made by welding a section of round bar into a 1-1/4" thick
piece of steel plate, boring & threading the centre to fit on the Ta
Shing 'nose'.
Note: new toolpost / toolholder visible in foreground - I prefer this
style to the 4-tool toolpost that came with it - more versatile.
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A close-up of the machined face, ready to have the slots milled into it. |
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Looking at it from the side, screwed onto the nose of the lathe.
I found that 'stick' welding (MMA) was far superior to gasless MIG on
steel this thick - maybe it's just me, maybe I'm just not practiced enough
with gasless MIG yet.
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