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View Full Version : Adding T slots to lathe cross slide?



The Artful Bodger
04-22-2009, 07:32 PM
My Generic Chinese Lathe which appears to be the same as a Grizzly G4003 has no 'T' slots on the cross slide which limits the adding of a vertical slide or ball turners etc.

I dont think the slide is thick enough to cut slots and anyway I dont have the machining to that.

Maybe someone makes something to meet this need? I have seen replacement cross slides with T slots available for Boxford etc but not for this lathe.

Any ideas anyone?

David Powell
04-22-2009, 07:47 PM
I use a Standard Modern 9" lathe.{ A Canadian version of a South Bend} It has a plain flat topped cross slide. I wanted to add a rear mounted tool post to use a parting tool. My solution was to tap half a dozen 3/8" holes in appropriate places and fasten a 1/2" plate on top of the cross slide, overhanging to the rear, and build my rear post on that. IF you can afford to lose the height between the spindle and the top of the slide perhaps this mught be a cheap, quick way to get the job done, Regards David Powell.

thistle
04-22-2009, 07:53 PM
Colchester lathes have a dovetailed crosslide, that attachments fit on to.


http://img.photobucket.com/albums/0903/mudskipper/colchester.jpg

The Artful Bodger
04-22-2009, 07:58 PM
Thanks David, I may wind up doing something like that. The hieght of the round base of the compound is 15mm which means I could fit a plate that thick without interfering with the compound and it is very unlikely that the loss of height over the cross slide would ever be a problem for me.

This leads to the next question, considering that this would be a semi permanent fixture I should drill and tap a matrix of holes, is there a standard or convention for spacing between 'T' slots or fixing holes on slides and attachments etc?

The Artful Bodger
04-22-2009, 08:02 PM
Thanks Thistle, that would almost do the trick for me but my cross slide does not come off easily and neither does it move far enough back to expose the dove tails on the carriage.

bollie7
04-22-2009, 08:18 PM
Thanks Thistle, that would almost do the trick for me but my cross slide does not come off easily and neither does it move far enough back to expose the dove tails on the carriage.

On the Colchester the actual cross slide has a dovetail as well as the carriage.. This allows for the fitment of different attachments as shown in the sketch. The attachment uses the dovetail for alignment and is clamped to the cross slide.

regards
bollie7

thistle
04-22-2009, 09:46 PM
yep , sorry i didnt explain more thought you got the gist.

barts
04-22-2009, 10:07 PM
Here's what I did recently to permit line boring a steam engine valve bore:
http://i564.photobucket.com/albums/ss85/KernelSander/DSC_7990.jpg

The plate is aluminum, and picks up the compound bolts and one near the cross-slide feed nut bolts.... I drilled and tapped a bunch of 1/2-13 holes on a pattern to let me use my mill tooling to hold things down...

The Artful Bodger
04-22-2009, 10:22 PM
Thistle, Bollie7, my fault for not understanding as it should have been clear enough, senior moment eh?:o

Bart,thanks, exactly what I now have in mind to do.

kmccubbin
04-22-2009, 10:51 PM
Another method would be to machine some tee shaped bars and attach them to the top of the slide, thus the top of the slide becomes the bottom of the tee slots

Kerry

The Artful Bodger
04-22-2009, 11:17 PM
I have considered that Kerry but I am just a little aprehensive about making a permanent mess of the cross slide!

oldtiffie
04-23-2009, 12:16 AM
This is my 10" x 30" Chinese 3-in-1
http://i200.photobucket.com/albums/aa294/oldtiffie/AirSmith11.jpg

that has the same basic lathe as BusyBee (Canada)
http://busybeetools.ca/cgi-bin/picture10?NTITEM=B2227L

Busy Bee lists a work-table for this machine but there are no sizes or details.
http://busybeetools.ca/cgi-bin/picture10?NTITEM=P2227DM2

I can check mine later and can post with pics if required - just let me know on this thread or by PM.

This is the set-up of the dove-tailed adaptor block that is fixed to the top of my cross-slide with 4 x M6 hex head socket screws (HHSS). It works very well and only takes a few minutes to set up or remove from the cross-slide.

http://i200.photobucket.com/albums/aa294/oldtiffie/AirSmith04.jpg

http://i200.photobucket.com/albums/aa294/oldtiffie/AirSmith06.jpg

http://i200.photobucket.com/albums/aa294/oldtiffie/AirSmith09.jpg

The Artful Bodger
04-23-2009, 12:34 AM
Thanks, the 'work table' looks interesting. The available space I have on the top of my cross slide is 120mm wide and the available height (without fouling the compound) is 15mm. Is that about the size of the piece?

Brgds

John

Paul Alciatore
04-23-2009, 12:57 AM
Check out my solution. It mounts in place of the compound.

http://bbs.homeshopmachinist.net/showthread.php?t=24736&highlight=lathe+milling

The Artful Bodger
04-23-2009, 02:20 AM
Looks good Paul, I guess the choice is between a matrix of tapped holes and 'T' slots!

I think there is enough space on the top of the cross slide to leave the compound mounted for most jobs but it is only two nuts to take it off.

pcarpenter
04-23-2009, 11:32 AM
I have a lathe real similar in size to the G4003 and thought about the same thing. There is not a lot of meat there to go cutting up.

I think the replacement work table to mount in place of the compound is a good idea. The compound bolts could be used up front with maybe just a pair of tapped holes at the rear of the cross slide to anchor the other end.

I did what may be a dumb thing....I installed oil cups in place of the cheap ball oilers....which means that I would have to put a big groove in the back side of such a mounting plate, to clear the oil cups. I hate ball oilers, but I may want to switch back, using some higher quality ball oilers this time.

paul

gregl
04-24-2009, 12:09 AM
There used to be a guy advertising in HSM under the name Metal Lathe Accessories who had castings for a t-slot cross slide and a number of other nice things. I bought one for my Atlas and it came out great. Don't know if the casting would fit yours\ machine but perhaps someone here has some contact info for him. I can't find it now.

The Artful Bodger
04-24-2009, 12:14 AM
Paul, re the oilers, I intended to just leave holes in the top plate for those?

Greg, that would probably be ideal if I ever find something like that, meanwhile I am looking for suitable steel to make a tapped plate.

barts
04-24-2009, 01:08 AM
There used to be a guy advertising in HSM under the name Metal Lathe Accessories who had castings for a t-slot cross slide and a number of other nice things. I bought one for my Atlas and it came out great. Don't know if the casting would fit yours\ machine but perhaps someone here has some contact info for him. I can't find it now.


try http://www.statecollegecentral.com/metallathe/A-11.html

= Bart

The Artful Bodger
04-24-2009, 02:54 AM
Thanks Bart.

jackary
04-24-2009, 05:52 AM
I added mild steel tee slots to my Chipmaster lathe like this
http://i107.photobucket.com/albums/m287/jackary2003/Chipmaster15-05-04-4.jpg
Alan