cuttermaster T&C grinder

[Ozcad]

I just won a Falcon T&C grinder on ebay which is a copy of a Cuttermaster

now its a little rough and a bit of a doer upper The major problem is with the air spindle can any one tell me what the clearance/tolerances are between the spindle and sleeve ?

[Teenage_Machinist]

How fine are the clearences?


"Pretty expletiveing small!"


about 0.0005 inch.

[.RC.]

How fine are the clearences?


"Pretty expletiveing small!"


about 0.0005 inch.

I would disagree, being an air spindle clearances would need to be larger then you think to allow the air to rush out and centre the spindle..

[Ozcad]

Now this is a dead ringer of the grinder I got for AU $382

http://bbs.homeshopmachinist.net/sho...t=25540&page=2

[oldtiffie]

I just won a Falcon T&C grinder on ebay which is a copy of a Cuttermaster

now its a little rough and a bit of a doer upper The major problem is with the air spindle can any one tell me what the clearance/tolerances are between the spindle and sleeve ?

Ozcad.

my air-quill fit is so close that I have to very very careful as to how I insert it into the body of the quill-holder. It is easy to jamb it if I am not careful. A coat of "3-in-1" (sewing machine oil) if too heavy will make hard work of it. Just a very light wipe will do. The quill has a first class ground finish and the quill-holder bore is lapped.

It is very smooth with no air applied but when the air is applied the quill will slide quick-smart on a grade/slope of not more than about 1/8" per foot (say 1:96 or 1"100 ~ 0.57 degrees) so I have to be careful that is does not get up enough speed to slide right out and head for the floor!!

But to answer your question, I have not measured the clearance but my guess is that it is in the order of the low "tenths of an inch".

My grinder came with metric 5C collets, but I never use them as I bought a "John Stevenson design" 5C>ER-32 adaptor and use my metric ER-32 collets instead as they will handle all diameters - inch and metric - from 2mm (~0.080") to 20mm (~0.800").

Make yourself an adaptor like a common lathe tool-post with a parallel shank for your biggest collet:


and get a "Spindexer" (top of pic):


and you can grind any lathe tool with no need - or expense - for a modified (USA "Baldor") or similar modified pedestal grinder:
https://www.machineryhouse.com.au/Se...mageField.y=12

http://i200.photobucket.com/albums/a...lt_sander1.jpg

http://i200.photobucket.com/albums/a...lt_sander2.jpg

http://i200.photobucket.com/albums/a...lt_sander3.jpg

[Ozcad]

Thanks oldtiffie for the detailed info I think I will try and get a local motor recon shop to bore and sleeve the quill holder then hone it should be able to get within .0002" or .0003"and I'll lap it in from there I can see I will be spending plenty of time making attachments