I'm trying to get all of my machines to connect to my DC system, using fittings I already have. For my router table, I have a fitting that's probably within 1/32" of sliding onto the fence port. The fence port is plenty thick and should give me enough room to shave it down without worry. The question is, how do I shave it down evenly in a consistent manner? The other option is to shave down the inside of the fitting itself. Anyone have any ideas about how to go about doing this?

 

Router table port:

 

Fitting:

Do you have a lathe?

I would mount it on the lathe also.

@lew Your question should be... do you have a functional lathe?   Yes, I do have a lathe. However, it's in pieces at the moment. I have to build a new rolling stand for it, and remove all the rust, and replace a capacitor, and... Did I mention that it needs a lot of restoration work?

Maybe you could put a sanding drum in your drill press and ream out the fitting in the first picture.

 

If it’s a 1/32 or less any chance of heating the fitting then forcing it on to reshape it?

My 2 cents

 

Depends on which way the air flows.

I would think you would want the machine fitting into the vacuum hose so that no debris builds up on the junction of the 2 pieces.

If the machine connection is larger than the vacuum hose, and you have the excess material on the machine end, then some abrasive paper used like a "shoe shine" would/should take the plastic down to a reasonable fit.  

If you want it the other way then an abrasive paper glued to the perimeter of something close to the size of the hole. chuck it into a drill and go at it

Similar to a flap wheel??

Edited September 4, 20241 yr by smitty10101

Looks like a plastic part so this should be easy.  If I were to modify the port, I would do so with a fairly aggressive bastard file.

My usual go to with vacuum fittings is the plumbing isle of Home Depot, looking for those rubber + hose clamp adapters we used to call "the slumlord special" when I was doing remodeling work.  I use these a lot going from sanders, chop saws, etc to a shop vac.  With all the different pipe spec's out there, there are a lot of ID options on the rubber adapters, the tricky bit is finding a place that has a large variety (my local hardware store is actually very good for this).

I have used a heat gun to soften up a PVC pipe or fitting end then you can stretch it over something that is a little larger. I have done this several times on dust ports.

Thanks for the suggestions everyone. I ultimately decided to go the labor intensive route. I used plumbing sandpaper and slowly sanded down the port. It was time consuming, but it worked.