Author Topic: 20 MM pvc pipe  (Read 5952 times)

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Offline murphyt

  • Posts: 17
20 MM pvc pipe
« on: September 05, 2008, 05:35 PM »
A while back qwas posted about using 20 mm pipe on the mft. I bought some it readily available here but found them to loos fitting. I then tried several other things and found two that works best. The first is nylon connectors for 20mm for irrigation piping they fit tight in fact too tight but easily fixed by cutting a band saw  kerf or two and plus the walls do not collapse or bend. The other thing that works great is 20 mm anchor bolt. You can tighten them and loosen them to remove great in jigs where you want to be sure nothing moves. We can make a plan in sending any over there if anybody is interested.
Johannesburg
South Africa

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Offline kitui

  • Posts: 39
Re: 20 MM pvc pipe
« Reply #1 on: April 17, 2018, 11:00 PM »
There are two brand of socket wrenches at HD in USA that works too. I went there with a sample of 3/4 plywood with 20mm hole and try several different ones. I would be curious about how many different things can be used as dogs in Europe. They have more choices for 20mm and I am on my way there soon. I will look st the bolts. Thanks

Offline starcat102

  • Posts: 2
Re: 20 MM pvc pipe
« Reply #2 on: September 04, 2018, 02:53 AM »
There are also 20mm dogs from Vertias for the MFT.
https://www.feinewerkzeuge.de/bankhaken-20mm.html

Offline DeformedTree

  • Posts: 166
Re: 20 MM pvc pipe
« Reply #3 on: September 04, 2018, 07:37 PM »
A while back qwas posted about using 20 mm pipe on the mft. I bought some it readily available here but found them to loos fitting. I then tried several other things and found two that works best. The first is nylon connectors for 20mm for irrigation piping they fit tight in fact too tight but easily fixed by cutting a band saw  kerf or two and plus the walls do not collapse or bend. The other thing that works great is 20 mm anchor bolt. You can tighten them and loosen them to remove great in jigs where you want to be sure nothing moves. We can make a plan in sending any over there if anybody is interested.

Probably will depend specifically on what pipe you buy.  PEX in Europe and the rest of the world is metric, but in the US they inchified it to the CTS spec (copper pipe among other things). Which is 1/8th inch bigger than it's name on the outside.  so 3/4 CTS is 7/8OD.  Then there is PIPE, which has trade designations, far as I know, the whole world uses the same spec for PIPE even if given in a inch or mm trade size, it's the same. You just have to watch the thread (NPT in North America,  G thread elsewhere).  PCV tends to be yet another size and not based on a specific dimension.  So while someone made have said 20mm pipe, it's hard to say what specifically they may have had on hand where they are based on terminology and specs for that region.  If you got something that is listed as 20mm, it might actually be 3/4" and thus a bit loose.   People also interchange PIPE and TUBE, even though they are different things.  A 20mm tube would be 20mm on the OD.

Offline Michael Kellough

  • Posts: 3535
Re: 20 MM pvc pipe
« Reply #4 on: September 04, 2018, 09:27 PM »
Years ago before Steve started making QWAS dogs he was looking for some inexpensive way to make use of the 20mm holes in his MFT 1080. He imported a small quantity of 20mm pipe or tubing from Europe (I think France) and gave me some. It is dove grey and it might be pvc but I’m not sure. Compared to Schedule 40 PVC pipe we use here Steve’s stuff would be Sch. 20 so it may be a different plastic or maybe it’s only meant to function as electrical conduit.

It was a pretty good fit in the old MFT 1080 but it’s a little too soft to really push material against. I think the holes in the current MFT production are slightly larger. I still use the old tables.

Offline Svar

  • Posts: 1471
Re: 20 MM pvc pipe
« Reply #5 on: September 04, 2018, 09:36 PM »
You can easily modify PVC pipe to fit without lathe:
http://festoolownersgroup.com/festool-jigs-tool-enhancements/pvc-bench-dogs/msg248451/#msg248451

However, there are so many offerings of 20 mm bench dogs today that simply purchasing them is the way to go.
« Last Edit: September 04, 2018, 09:39 PM by Svar »

Offline Corwin

  • Posts: 2617
Re: 20 MM pvc pipe
« Reply #6 on: September 04, 2018, 10:21 PM »
You can easily modify PVC pipe to fit without lathe:
http://festoolownersgroup.com/festool-jigs-tool-enhancements/pvc-bench-dogs/msg248451/#msg248451

However, there are so many offerings of 20 mm bench dogs today that simply purchasing them is the way to go.

Best to measure the size of the holes in your table first. My first MFT1080 had smaller holes than my second and third. And, if I'm not mistaken, the MFT/3 has holes yet another size. So, while they've all been called 20mm holes, there are differences, and the dogs you purchase may not fit as desired. So, measure what you have and ask before purchasing.
Looks like your rabbit joint is a hare off! ;)

Offline Cheese

  • Posts: 4946
Re: 20 MM pvc pipe
« Reply #7 on: September 05, 2018, 12:05 AM »
My first MFT1080 had smaller holes than my second and third. And, if I'm not mistaken, the MFT/3 has holes yet another size. So, while they've all been called 20mm holes, there are differences, and the dogs you purchase may not fit as desired. So, measure what you have and ask before purchasing.

Hey Festool...so what a wicked web we weave when first we practice to deceive. Producing specifications and verifiable dimensions on your manufactured products would alleviate this situation.  Just sayin... there’s something almost holistic about coming clean.

Offline Corwin

  • Posts: 2617
Re: 20 MM pvc pipe
« Reply #8 on: September 05, 2018, 03:52 AM »
Hey Festool...so what a wicked web we weave when first we practice to deceive. Producing specifications and verifiable dimensions on your manufactured products would alleviate this situation.  Just sayin... there’s something almost holistic about coming clean.

Maybe not so wicked, as they are (/were) just holes. You could put clamps and such in them. I think they may have enlarged the holes to make it easier to insert the FS clamps -- they 'just' fit into the smaller holes. So, maybe they were just responding to customer input. Being nice. Well, maybe.  [wink]
Looks like your rabbit joint is a hare off! ;)

Offline Cheese

  • Posts: 4946
Re: 20 MM pvc pipe
« Reply #9 on: September 05, 2018, 03:37 PM »
You could put clamps and such in them. I think they may have enlarged the holes to make it easier to insert the FS clamps -- they 'just' fit into the smaller holes. So, maybe they were just responding to customer input. Being nice. Well, maybe.  [wink]

Well we can always hope.  [big grin]

Festool rather reminds me sometimes of Nikon. Both produce great products but neither one is willing to divulge why they made a change to their product and when that change went into effect.

New products are announced with fervor but modified/changed products are swept under the rug. I always thought this forum would be an ideal platform for those type of announcements.

A product update could be announced on the FOG, that would generate a date and it could also be tied to a serial number if it was a significant/critical change. The list would have its own category on the FOG and anyone could access it. No more "has the Kapex been changed?" or "has the TS 55 changed?"

I guess from a customer communication perspective this approach is just ingrained in me. It was always Engineering's responsibility to sit down and communicate any machine changes with Field Service. Field Service would in turn communicate with both the customer and the Manuals Group. The customer was informed of the changes  [big grin]  and the manual was updated if necessary.   [big grin]

Happy...Happy...no one was left in the dark to fumble around and possibly muck things up.

Offline Gregor

  • Posts: 982
Re: 20 MM pvc pipe
« Reply #10 on: September 07, 2018, 02:39 AM »
... if necessary.   
That need lies in the eye of the beholder ;)