miter gage

[Hobbyman2]

In stock and on the way ,, thank you for your help.


Hobbyman2

[JPG]

I would be very surprised to understand they needed replacement. They do not wear much and are quite long. I still have the originals in my goldie from 1963. I did think I needed to replace them, but simply adjusting them made that unnecessary.

[BuckeyeDennis]

I would be very surprised to understand they needed replacement. They do not wear much and are quite long. I still have the originals in my goldie from 1963. I did think I needed to replace them, but simply adjusting them made that unnecessary.

I have an old-style miter gauge that came with my cast-iron-tabled bandsaw. It has the old-style nylon glides, and they need to be adjusted downward. The problem is, the straight/common screwdriver slots on the nylon screws can only be accessed by reaching through the miter gauge body, which limits me to using a pretty small screwdriver blade. But the screws are stuck tight. I torque them until I sense that the slot is about to strip, and then I stop. Then try again a year or so later, with the same results.

I'm about ready to drill them out and replace them. Does anyone have any better ideas?

[JPG]

3/16" rod ground to a straight tip(full width).(could be slightly larger od)

I have an old screwdriver that is shaped thusly(straight round sides, no flared sides).

The slot is about .050 'thick' and the full width of the screw(5/16-18).

The screw driver needs to be a snug fit in the slot.

I use a 1/4" flat point screw to jam the nylon screw so as to prevent drift and it also keeps crud out of the slot.

Above that I have 1" flat point set screws that are used to secure the stop rod when it is used.

Cleaning the crud out of the slot is a pita, but necessary if the screw is
being 'stubborn'.

My nylon screws are now about .350" long.
I assume they have worn 0.025" over the past half century.

[Hobbyman2]

I should have taken pictures of the extraction of the old glides,,,,,,, It wasn't pretty and took close to 1/2 hr.

The threads are 5/16 ,

I ground down the point of a awl,,,,,,,ground down one side rather flat and shaped the small point like a knife blade yet still pointed,,,,


I used 3 different drill bits through the center of the glides,,starting with a 1/16 in bit and ending up with a 3/16 in bit,,, being care full not to damage the threads ,I went in through the top side with the drill , the bottom of the glides are rounded and it just seemed easier to go in from the top,,, , then I took the awl and ,,,carefully ,,, very carefully ,,,,,,,,,,dug away at the remaining pieces of the glides left in the threads ,,,, I got them out,,,, piece by piece,,,,after all of that ,,,,,I used a tap and chased the threads to make sure I didn't bugger them up.

The old nylon glides were worn out ,,,,, the screw driver slot was gone and the glides were froze up,,,,,

I had tried to tap a very small screw driver down from the top creating a new slot after I had drilled on them ,,,,,,it seemed to make them even tighter in the miter gage,, made things worse,,like it spread them apart ,,,, a small word of advise ,,,,, don't do that!!.

The glides on this miter gage go in from the top ,,not the bottom,,,, the ones that look like a bolt that go in from the bottom ,,,put this miter gage out of square with the table.

I said earlier the threads were different size from the part number listed on the SS web site ,,,,however they are both 5/16.

I am guessing the last fella had issues with these ,,,,or they just wore out over time.

If you have to remove a frozen glide like these ,,,,, my only suggestion is go slow and don't damage the threads .
I don't think there are any glides with larger thread sizes if you mess the threads up..,, I may be wrong .

Good luck

Hobbyman2

[JPG]

Nothing unique about the 'glides', they are merely nylon set screws.

I think hex socket screws would be better if one can locate some.

FWIW , the screws can be inserted from the bottom, but with the slot end first, then turn with screwdriver from the 'top'.

[Hobbyman2]

I located 5/16 slotted nylon set screws on ebay but they have flat bottoms,,,,,, not sure if they would catch on the table , I suppose ya could round them off ,,,,,,I know some screws are not of the same hardness .
They have hex heads and slotted screws available.
Most were only available in bulk.

I ordered 4 OEM nylon screws from SS ,,,,,bought 2 extra for ......just in case,,,, total was $11.11 shipping included.




Hobbyman2

[br549]

Once again a perfect example of the kind of information and tips for a problem I didn't know I had that I find so useful here!

My 1980 mitre gauge has the two nylon set screw glides which I either never knew about or had forgotten that they were there. My mitre gauge had a little side-to-side rock to it, and from the absence of paint on a few spots on the bottom of the miter gauge, this was enough to prompt me to examine and adjust them. Compressed air blew out most of the crud to where I could see the screwdriver slots, and then a little careful turning with an appropriate sized screwdriver so as not to damage the threads on the sides of the holes. Turned them until they came out the bottom, and then cleaned up the threads in the mitre gauge body by running a 5/16-18 bolt with some light oil on it in and out a few times. Finished clearing the slots of the nylon set screws with the backside (non-cutting edge) an xacto knife blade and re-inserted them from the bottom (with slot up), and then "loosened" them up into the mitre gauge with screw driver. With all of the sawdust and crud removed, the screws are now translucent. With gauge in mitre slot, adjusted height of set screws until mitre gauge rocks no more.

I think I will add some 5/16-18 bolts or screws from the top, that extend down past holes for stop rod, to help keep crud out. Thanks to all for this discussion and suggestions.

[rpd]

Here is a video on the Shopsmith miter gauge, it's evolution and why the glides were changed.
[youtube]https://www.youtube.com/watch?v=ILqeevkKf3A[/youtube]

[Hobbyman2]

Once again I should clear up a mistake .

I said earlier ,,,,,,The glides on this miter gage go in from the top ,,not the bottom,,,,,,,I should have,,,, and meant to say,,,,they adjust from the top not the bottom...

Thanks for the video.


Handyman2