Chuck adapter plate for my smithy 1220

[mac1911]

So trying to move forward my chuck will not hold my piece of scrap. It will also be very rough cut as all I have is a saws all. Not going to be pretty. Thinking hex cut close to dimensions and machine down
I was thinking of a mandrel in the check and drill tap hole and bolt piece to that ? I might not be clear on discription
I want to drill a hole in plate. Bolt it to round stock in chuck and maching the index for the lath spindle, drill and tap the holes mount the plate then machine the recess for the new chuck. Drill and tap holes for chuck.

 

[mac1911]

made a arbor and used a inexpensive welded carbide tip to get the aluminum plate down to size to fit the chuck.
Turned the recessed register to fit lathe flange.
Need to now transfer the hole locations.
Little stumped on how to measure and lay out the holes so im thinking of using draw bar to hold plate in place.
Make some short locating pins and use a c clamp to press the pins into the plate?

 

[mac1911]

Once I get the mounting holes drilled and tapped I will cut the raised register for the chuck side

 

[Smithdoor]

View attachment 467322I am new to machine work. Took the plunge by the way of grabbing a smithy at a very low price.

I have also acquired some tooling, measuring devices and many other odds and ends. One of which is. Bison 5” 4 jaw ind. chuck.
So after a few small projects im going to dive in and attempt to make a plate to adapt this unit.
Its a tad small for the smithy. So I need to make a plate that bolts to the smithy spindle ( 3 hole) and then the bison mounts with 4 bolts from the front.
Posting pictures on this forum is painful so there wont be to many all to soon

I use cast iron dum bells most time.
I have steel too.
The last one I purchase semi finished .

Dave

 

[mac1911]

I use cast iron dum bells most time.
I have steel too.
The last one I purchase semi finished .

Dave

Im trying to do this on a negative budget. I dont have a lot of cutting tools to machine down weights.
I had to use a diamond file to get a better edge on two inexpensive bits to get the roughing done on aluminum.
No point in buying a semi finished plate I would still have to do everything anyway.
I did find a semi finished plate that was close but between the cost and shipping It was to much.

 

[Alcap]

I made my backplate similar to how your are . I made a small pointed “ transfer “ pin , held the backplate tight to the spindle with the tailstock and with a brass punch and small hammer tapped the pin . Took the backplate off , drilled and tapped . Mounted it back with the single bolt then transferred the second hole, repeated the third time . A little time consuming but did want to screw it up . Also forgot to mention that I kept the location marks from the old chuck / spindle to the new backplate , at least mine had punch marks .

 

[mac1911]

I made my backplate similar to how your are . I made a small pointed “ transfer “ pin , held the backplate tight to the spindle with the tailstock and with a brass punch and small hammer tapped the pin . Took the backplate off , drilled and tapped . Mounted it back with the single bolt then transferred the second hole, repeated the third time . A little time consuming but did want to screw it up . Also forgot to mention that I kept the location marks from the old chuck / spindle to the new backplate , at least mine had punch marks .

Once im done I will index this set up like I did my 3 jaw.
Probably over kill for this lathe and my skills.
Hoping the weather holds out once it gets below 40’ its to cold for me in the shed.

 

[mac1911]

I have been looking for the solution to the bolt hole dia problem
I knew there had to be a way and this guy explained it well

 

[mac1911]

Made the transfer pins today.
Dont think I need to harden to get the Aluminum plate done but I will in case I need them for the steel plate.

Im on the hunt for 5” round piece of steel stock.

 

[mac1911]

Made the transfer pins today.
Dont think I need to harden to get the Aluminum plate done but I will in case I need them for the steel plate.

Im on the hunt for 5” round piece of steel stock.

Had a little free time today so I rounded up the last few things I needed to proceed.
Also heat treated the locating punch.
I did the heat treat how my uncle showed me.
Heated to cherry/bright red and quenched in mineral oil. Cleaned off the scale gave it a polish and stuck it in the oven at 450” for about 20 min its a small part. Its only anout 3/8 dia 1/2 long. Came out a purple/blue ish color
To busy to do any pictures