According to Glenn :
"DoN. Nichols" wrote in message
...
According to Glenn :
[ ... ]
I have the same TPG as yours. Same model number anyway. Mine is in a
Dark
Grey box with just the top opening lid..no drop front.
Instead of the hammertone blue box which I have. I don't know
whether that makes yours or mine older. :-)
My best guess is mine is from 1956
O.K. That might put mine as 1960 or so.
Does yours have the separate ground wire and connector as shown
in the manual? I would expect that a 1956 one might have already moved
to the standard 3-pin power plug such as mine has.
[ ... ]
If it works for you I will just scan it to PDF and post it to the drop box.
The manual is only 6, 8.5X11" pages.
That is what you did -- and I thank you for this. It worked out
quite nicely -- and I suspect will help the other participant in this
thread as well.
I think this is at least as on topic as a leaky bush 
Far more so, I believe. Rebuilding of metal metalworking tools
is certainly on topic. :-)
[ ... ]
O.K. "No. 0 High speed oil" sounds like a very thin spindle oil
to me, so what I got for my surface grinder would be about right.
I use #10 turbine oil in mine and it seems happy with it.
O.K. That should work nicely. You might even get away with
automatic transmission fluid, which is a nice thin oil.
The collett adapter is a threaded sleeve type thing that has the collett
chuck on one end and is threaded internally to screw onto the spindle.
Looks a lot like somebody cut the end off a dremel only a bit larger OD
on
the shaft. It is counter bored so it threads up to the sholder on the
spindle.
That sounds like what I was planning to make. What is the
overall length to the end of the collet? (This will give me a target to
shoot for.)
Ok .. Let's see if I can make a picture with words
The collett adapter is only 2 pieces. The main body is 1.685" OAL and .427"
OD. The large part of the body is 1.125" long and is drilled and tapped to
match the shaft extension. The collet portion is threaded for 5/16 32 for
.325" and drilled for .125" shaft then split 4 ways. The last .130" is
tapered to provide the clamping from the collett closer nut. There are 2
flats on the shaft and on the nut for collett wrenches and the nut is
knurled also.It looks like they tapped the internal threads first and then
bored out the ID to fit the unthreaded part of the spindle. The 1/8" hole
goes all the way into the 1/4" hole. My spindle is threaded for 1/4 32 BTW.
I think it is easier to make one then to describe it
Thanks -- this adds to the information from the scans and the
..txt file which accompanys them. In particular -- the information about
the 1/8" hole being all the way through to the 1/4-32 threaded section,
and the number of splits in the collet section.
If any more info would help let me know. I think the only thing mine
dosen't have is the scatter guard for the OD wheels. The parts list
dosen't
show one but some of the ictures do.
Since I don't have the manual, I don't have the parts list
either. But I saw guards in some of the photos on the DuMore web site
when I tried to find information and really did not feel like spinning
up a larger wheel without one, so I made one to fit. (Turned from some
3-1/2" diameter aluminum. You probably visited the quick-and-dirty web
page and saw one shot of it, at least. If you want, I can send the
dimensions which I worked to as a drawing.
I did go to your Q&D and I think I can make a good facsimile of your scatter
guard. Thanks for the idea.
Great. FWIW, The bore to slip over the end of the spindle
housing is 1.1125" (+0.001"/-0.0005" should do, I think.) The
thumbscrew was one which I happened to have a box of with a nice smooth
end so it will not dig into the bearing housing. I leave 0.125" of the
end of the bore down at 1.000" to serve as a stop when I slide it on.
The open side was the last thing cut -- with a big wide slab mill on a
horizontal milling machine -- but of course you adapt to whatever
machine tools you have. I opted for thicker at the OD of the guard, to
better control exploding wheels. It was sized for a wheel which is
noticeably larger than the 2" wheel listed in the manual as the largest,
but that wheel still has a maximum speed well above the speed of the
spindle -- so it remains to be seen whether the motor can drive the
extra diameter. If not, then perhaps I go into making extra pulleys (a
#0 and a #3 perhaps) to extend the speed range a bit.
BTW -- My e-mail address is valid, if you want to take this
off line -- though we've got at least one other in the thread
who can benefit from what you know as well.
I don't know much but I did get lucky and get the manual with my TPG I
think the exploded parts diagram will tell you more than anything else in
the book.
It does indeed. It confirms a lot of what I had already
believed, and your measurements confirm other things.
Thanks again,
DoN.
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