Do You want to buy some 20 mm PVC Pipe Bench Dogs for your MFT?

[vkumar]

For some reason sometimes McMaster has 2 part numbers (maybe due to change of suppliers).  The p/n 45435K91 is the same as 45435K1.

Maybe this is what Dave was implying.

In all my years of ordering at McMaster, having one correct p/n or description will result in your getting the right product. You can always call them they are quite efficient.

Also the return policy is very liberal.  Just ship the product back to them with the paperwork that came with the order--they will credit your account.  No RMA, no reason necessary.

Vijay

 

[Qwas]

Hi all,

I ordered two pieces of 20mm from McMaster-Carr early this week.  They came yesterday.  They are marked 20 x 1.9mm but actually measure about 0.2mm larger in diameter than that so are a tight fit in the 20mm holes in my MFTs and MFT3s.  Can't yet say how useful they will be or if the 1.9 wall is stiff enough to use for jigs.  Cost was $10.05 each plus $14 shipping to 97531.  Part number is 45435K91.  More later if and as I get time to do some experimenting.

Jerry

Our pipe slides in the holes. I've been testing a few pieces on the holes and there is some variance. Some fit quite snug while others try to slide right through with only their own weight (2 foot long pieces).

Our walls are quite thin also, 1.5 mm, and may be an issue. My earlier post with ClosetMaid connectors should give you the extra strength you might need. A package with 2 connectors is about $3. These connectors slide into the pipe about 1 inch.

 

[mhch]

Can't yet say how useful they will be or if the 1.9 wall is stiff enough to use for jigs. 

It is true that PVC pipes tend to flatten if compressed across their diameter.
There are two ways to deal with this,

1) Do not compress the pipe directly, but a small MDF rectangle in which the
  pipe is inserted (in a 20mm hole copied from the MFT)  That way, pressure
  is applied in a more uniform way around  the pipe and keeps it circular
  This is the approach used by the home made fence I described.

  2) inject some foam or whatever plastic product to fill the pipe.

 

[osipbloonst]

       
      Qwas.    The pound signs were for emphasis, so that people would not buy the wrong stuff.
 
  But Jerry Work proved that at least one person at McMaster-Carr (Jesse) doesn't know his stock.

  So, now that we know the "20mm" pipe is available all we have to do is find a dependable inner

  liner. Perhaps the " closet maid"  will be good looking enough to help.

 

[mhch]

Our pipe slides in the holes. I've been testing a few pieces on the holes and there is some variance. Some fit quite snug while others try to slide right through with only their own weight (2 foot long pieces).

That did not happen with any of my two MFTs with the same kind of pipes,.
I tried many holes. Now the question is where is the variance, the pipes
or the holes, or both ?

 

[Qwas]

It seems to be with the pipe.

 

[Jerry Work]

Some quick checking yesterday with the 20mm (nominal) plastic pipe from McMaster-Carr shows that it is too tight a fit in the holes on the MFT or MFT3.  It takes a hammer to insert and lots of cuss words to retract - not the stuff from which jigs to dream about are made.  The 1.9mm wall thickness also seems too soft and will deform easily with just a squeeze from pliers.  That likely makes it too soft for secure positioning as well.  But, and it is a big but, these are just very preliminary observations.

Jerry

 

[Qwas]

Jerry, If I have any pipe left over, I can send you some of it. Right now, all of it is accounted for but there are 10 people I have not heard from yet concerning payment. If one of them backs out on me...

 

[Bluenose]

Hey Steve,

Just wanted to say thanks a bunch for doing this for all of us. The order arrived just fine and I promptly "stored" it in the bottom of my tool bag. But yesterday I was cleaning and organizing and I decided to try modifying my MFT3 in a way that PER suggested by side mounting the fence. It allowed me to have the bench closer to the wall which is great in my small shop. The problem was that I lost the ability to mount the second fence support. A quick trip to the miter saw and two 2" 20mm bench dogs were in place and supporting the fence. Thanks, Bill

 

[Qwas]

Thanks Bill.
You're the first one I've known to use the bench dogs with the MFT/3. That's a pretty ingenious use for the dogs! I love it.