You're right, Harold. I'd forgotten the original source of the spiral flute suggestion. Thanks to Russ for that!
Dave
Search found 48 matches
- Fri May 03, 2019 6:07 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
- Fri May 03, 2019 8:01 am
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
The project is done and the results are in. The winning solution, in my case, is a spiral flute tap as suggested by Harold and the hands down winner on cutting oil is.......drum roll here........cooking spray as suggested by Inspector! I resisted the cooking spray as just too far "out there&quo...
- Fri Apr 12, 2019 12:46 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
Cooking spray! Who'da thunked? I'll give it a go and thanks.
Dave
Dave
- Fri Apr 12, 2019 5:32 am
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
Thanks, Harold, for your thoughts and advise! I'd come to the same conclusion about tapping test holes in the same manner as production prior to the customer's parts and will use the wax first. As of yet I don't have an alternative if wax (or something else!) doesn't work. I will also slow the rotat...
- Thu Apr 11, 2019 5:40 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
Harold, Excellent deductive work! Spiral flute taps are on their way. Can you, or anyone with knowledge on the subject, recommend an appropriate cutting fluid for this application in PVC? I selected a wax listed as appropriate for plastic but am now thinking that it may be too viscous and could comp...
- Thu Apr 11, 2019 7:40 am
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
These came in random order, not one right after another. That said the first trashed hole came after very many with no problem and with a plain tap of conventional 4 straight flute design. After changing to a TiN coated bottom tap the typical material extraction came up easily removed with compresse...
- Wed Apr 10, 2019 8:42 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
After several dozens of holes tapped with the new TiN coated straight flute taps and oil based cutting fluid I still ended up with 5 holes trashed. Very odd as there was no indication leading up to the trashed holes that anything was going south. I pulled the plug on continuing the tapping. I am in ...
- Tue Apr 09, 2019 4:57 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Re: Machine tapping PVC sheet with small blind holes
Belay that request!
3 drops of Transultex in each hole and it's a different world. The chips come out in the flutes and thread finish is dandy. Just had to get away from it for a bit and ponder. And then there it was: the answer.
3 drops of Transultex in each hole and it's a different world. The chips come out in the flutes and thread finish is dandy. Just had to get away from it for a bit and ponder. And then there it was: the answer.
- Tue Apr 09, 2019 4:23 pm
- Forum: General Discussion
- Topic: Machine tapping PVC sheet with small blind holes
- Replies: 18
- Views: 37384
Machine tapping PVC sheet with small blind holes
Howdy, I've got a project that requires tapping several hundred 10-32 blind holes 1/2 to 5/8" deep in PVC sheet. Needless to say I'm not interested in using a tap handle. I have a versa-tapper but the results are not real good leaving ragged peaks on the threads. I've used both plain and TiN co...
- Thu Jan 03, 2019 11:17 pm
- Forum: Milling Machines
- Topic: Offshore turret riser for Bridgeport
- Replies: 12
- Views: 12299
Re: Offshore turret riser for Bridgeport
Can you determine shipping cost based on my zip code of 98292?
Bolts, yes or no?
Bolts, yes or no?
- Thu Jan 03, 2019 11:05 pm
- Forum: Milling Machines
- Topic: Offshore turret riser for Bridgeport
- Replies: 12
- Views: 12299
Re: Offshore turret riser for Bridgeport
Did the riser come off a Bridgeport? Do you have bolts for it? What is the cost of shipping to 98292?
Thanks, Dave
Thanks, Dave
- Thu Jan 03, 2019 9:01 pm
- Forum: Milling Machines
- Topic: Offshore turret riser for Bridgeport
- Replies: 12
- Views: 12299
Re: Offshore turret riser for Bridgeport
Well, now you've got my interest! Thanks