Ed,
The 'why' I wondered if it was hard because one way to 'true' it up is to re-cut the taper. If it is hard then it is not so straight froward
DaveH
I got my collets today. Now I really need to get my butt in gear and get the collet chuck attached to the lathe so I can use the collets.
Ed
[
attachment=2939]
[
attachment=2940]
Ed
Did you get a MT3 taper with the collets or just the collets by themselves? I went with the kit from T4C, with a R8 shank holder and a MT3 Taper Shank Holder that way I can us the ER collets in the tailstock of the lathe as well as in the Mill. (Also got the MT2 holder but that was when I had the 9x28 Logan) the ER40 collets can be handy in the tailstock as they grip better than a drill chuck.
Otherwise looking good.
Have not checked my ER40 chuck yet but can you make the backing plate into a set-tru? Just needs a longer shoulder and deep enough recess to accomodate the 4 set screws.
The D-4 Back-plate is on my wish list from T4C and will be on my next order.
Walter
(09-12-2012, 06:58 PM)starlight_tools Wrote: [ -> ]Ed
Did you get a MT3 taper with the collets or just the collets by themselves? I went with the kit from T4C, with a R8 shank holder and a MT3 Taper Shank Holder that way I can us the ER collets in the tailstock of the lathe as well as in the Mill. (Also got the MT2 holder but that was when I had the 9x28 Logan) the ER40 collets can be handy in the tailstock as they grip better than a drill chuck.
Otherwise looking good.
Have not checked my ER40 chuck yet but can you make the backing plate into a set-tru? Just needs a longer shoulder and deep enough recess to accomodate the 4 set screws.
The D-4 Back-plate is on my wish list from T4C and will be on my next order.
Walter
Walter,
I just bought the plain back collet chuck from T4C (see, I'm learning the lingo) and the D1-4 adapter plate from Enco. I hadn't thought about the MT-3 holder for the tailstock. I'll definitely add it to my shopping list since it will be very useful for holding drill bits.
I had thought about the set-tru feature and I'm tempted to do it since I doubt I'm a good enough machinist to get the accuracy I would want out of the collet chuck without some sort of adjustment capability. The recess in the collet chuck is about 1/4" so I should be able to drill and tap for some 8-32 adjustment screws around the perimeter of the chuck. Certainly something to think about.
Ed
(09-12-2012, 07:09 PM)EdK Wrote: [ -> ] (09-12-2012, 06:58 PM)starlight_tools Wrote: [ -> ]Ed
Did you get a MT3 taper with the collets or just the collets by themselves? I went with the kit from T4C, with a R8 shank holder and a MT3 Taper Shank Holder that way I can us the ER collets in the tailstock of the lathe as well as in the Mill. (Also got the MT2 holder but that was when I had the 9x28 Logan) the ER40 collets can be handy in the tailstock as they grip better than a drill chuck.
Otherwise looking good.
Have not checked my ER40 chuck yet but can you make the backing plate into a set-tru? Just needs a longer shoulder and deep enough recess to accomodate the 4 set screws.
The D-4 Back-plate is on my wish list from T4C and will be on my next order.
Walter
Walter,
I just bought the plain back collet chuck from T4C (see, I'm learning the lingo) and the D1-4 adapter plate from Enco. I hadn't thought about the MT-3 holder for the tailstock. I'll definitely add it to my shopping list since it will be very useful for holding drill bits.
I had thought about the set-tru feature and I'm tempted to do it since I doubt I'm a good enough machinist to get the accuracy I would want out of the collet chuck without some sort of adjustment capability. The recess in the collet chuck is about 1/4" so I should be able to drill and tap for some 8-32 adjustment screws around the perimeter of the chuck. Certainly something to think about.
Ed
What is the material of the D1-4 Adapter plate you got from Enco? Steel, Semi-Steel or Cast and what RPM is it rated for, did it specify? T4C is stated as Cast Iron, but have not checked as far as what RPM.
Walter
(09-12-2012, 11:24 PM)starlight_tools Wrote: [ -> ]What is the material of the D1-4 Adapter plate you got from Enco? Steel, Semi-Steel or Cast and what RPM is it rated for, did it specify? T4C is stated as Cast Iron, but have not checked as far as what RPM.
Walter
Walter,
The D1-4 adapter plate is cast iron and Enco does not rate them. I suppose one could call Enco and see if they know, but then I wouldn't necessarily believe what they told me.
Ed
Walter, I bought one of the same back plates from Enco that Ed has. I cut it down to make myself a spindle spider.
I'm curious about what a typical speed rating would be for a CI backing plate though. I couldn't even get the cam pins with the adapter the first time around, much less a spec sheet.
![[Image: attachment.php?aid=55]](http://www.metalworkingfun.com/attachment.php?aid=55)
Unless you've got a 10,000 rpm spindle, I wouldn't worry. I have a 10" D1-6 adapter for my 10" Pratt Burnerd Super Precision 3-jaw chuck, and another one for the 400mm 4-jaw independent chuck. While the 4-jaw chuck has yet to be fitted onto the spindle, I've had the 10" 3-jaw scroll chuck up to the machine's maximum of 1800 rpm many times. No problems even when loading it with cut heavy enough to slow the 5hp spindle.
I'll second the don't worry on that small a dia. My 15 3/4 inch cast iron 4 jaw is rated to 900 rpm.
