Machine tapping PVC sheet with small blind holes

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Inspector
Posts: 613
Joined: Mon Feb 23, 2009 4:25 am
Location: Saskatoon, SK, Canada

Re: Machine tapping PVC sheet with small blind holes

Post by Inspector » Fri Apr 12, 2019 10:58 am

My use of PVC (water/sewer pipe) is limited to a few pens. Cooking spray seemed to work as good as anything else I had when treading and cleans up easily.

Pete

Mark 2
Posts: 48
Joined: Tue Jan 24, 2012 11:11 am
Location: Seattle WA

Re: Machine tapping PVC sheet with small blind holes

Post by Mark 2 » Fri Apr 12, 2019 12:46 pm

Cooking spray! Who'da thunked? I'll give it a go and thanks.

Dave

Magicniner
Posts: 514
Joined: Thu May 30, 2013 4:40 am

Re: Machine tapping PVC sheet with small blind holes

Post by Magicniner » Tue Apr 16, 2019 2:18 am

I use Blaser Synergy 735 flood coolant for plastics and composites, it's oil free and Ph7.

Mark 2
Posts: 48
Joined: Tue Jan 24, 2012 11:11 am
Location: Seattle WA

Re: Machine tapping PVC sheet with small blind holes

Post by Mark 2 » Fri May 03, 2019 8:01 am

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" until I'd exhausted the other alternative cutting oils that I had on hand. I did try wax, Transultex & Accu-lube. I didn't try the suggested Blaser Synergy 735 due to cost. The cooking spray never failed to produce a very nice thread. Again who'da thunked? I used Costco Kirkland spray. Cheap, my favorite price right next to free.

Thanks to all that contributed to this thread. I will not hesitate to ask for advise in the future should I get "up against it".

Dave

Inspector
Posts: 613
Joined: Mon Feb 23, 2009 4:25 am
Location: Saskatoon, SK, Canada

Re: Machine tapping PVC sheet with small blind holes

Post by Inspector » Fri May 03, 2019 8:38 am

:wink: :wink: :wink:

Pete

Harold_V
Posts: 17663
Joined: Fri Dec 20, 2002 11:02 pm
Location: Onalaska, WA USA

Re: Machine tapping PVC sheet with small blind holes

Post by Harold_V » Fri May 03, 2019 3:32 pm

In the interest of fairness, it was Russ Hanscom who first mentioned the use of spiral flute taps. I just agreed, having an understanding of why.

H
Wise people talk because they have something to say. Fools talk because they have to say something.

Mark 2
Posts: 48
Joined: Tue Jan 24, 2012 11:11 am
Location: Seattle WA

Re: Machine tapping PVC sheet with small blind holes

Post by Mark 2 » Fri May 03, 2019 6:07 pm

You're right, Harold. I'd forgotten the original source of the spiral flute suggestion. Thanks to Russ for that!

Dave

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