New (to me) drill press!

O

Ordenrahl

Joined
Oct 16, 2015
Messages
37
I posted on here recently asking advice about belt grinders but I just picked this Cummins 12 speed drill press with stand off craigs list for $80. It reminds me of something we had in shop class back in the day!

Looks great, sounds great in overall good condition.
LBNgMX2.jpg


Belts for adjusting speed
6ghume1.jpg


Close up of the model number and brand
wTKrVxW.jpg


I'm happy with it, but I'm learning about this as I go and reading topics here and a lot of Walter Sorrells stuff. Was this a Good buy?
 
I would give you 100$ for it right now! I love the old solid stuff, I'd be checking out how true the spindle ran, and maybe look into putting a new chuck on it--may not need one of course--do you know what speeds it gives you? I think you will like it.
 
No idea on the speed, I'm not having much luck on google. I see some 5 speeds but I don't see much on the 12s.
 
i have the 16 speed floor model. it appears you're going to have the same problem i did. at least one of the belts needs to be longer. i could not get enough slack to change speeds. have you messed with the speed changes yet?
 
This might give you an idea of the belt speeds, depending on size of pulleys, but that looks just about like my old Craftsman drill press, except mine is a floor model, but other than that, it looks about the same.

12%20speed%20chart.jpg
 
Nice. Thank you for the diagram. I haven't tried messing with the speed settings yet. I put a bit in and turned it on. There is a slight wobble but it looks like an even wobble all around. If it's uneven, it will affect the roundness of the hole correct? I could test it on a piece of wood if that's the case.
 
Here is a picture with a hole drilled into some stock, it does look slightly uneven to the bottom left. I had to really look at it, it's not obvious outside if the photo.

o9w4cTM.jpg


Here is a picture with the bit in the hole. Not a tight fit, it's easy to slide the bit in and out. Doesn't look uneven with the bit in the hole though.
XzoTWFo.jpg
 
Chances are a slight wobble in tip of drill bit could be more of a bit drill bit. While one hole does look sorta out of round a tad, it's really hard to tell anything from photo. Drill hole in metal, then take the same size drill bit and see how well it fits when holding bit in hand.

Also, check the spindle by seeing how much movement (if any) could can get by moving the chuck by hand. There is usually an adjustment that might allowing taking some of the wobble slack from spindle, depending if slack is in bearings or on outside portion of spindle.

Don't worry, you got a GREAT deal at $80 for that drill press.

Ken H>
 
After doing some fiddling it seems the wobble kicks in the further I plunge the drill. So unfortunately I doesn't look like it's a bit issue.

I looked for a set screw up inside the chuck to tighten but it looks like it's just a pin hole and not anything I can tighten with an Alan wrench.

The good news is I can set the work piece a quarter inch below the bit so that I only plunge the bit a half inch or so. The bad news is I have no idea how to fix it.

I found 1 link for a similar model mannual on google but the website is long gone.
 
the set screw isnt inside the chuck. as you pull the handle down the metal that starts to show above the chuck that does not rotate is called the quill. the quill should have a groove that runs the length of it. that groove should line up with a set screw on the side of the drill press head. the screw will take out slop in the quill. if you have the spare coin, invest in a good chuck. with a jacobs in mine the runout is .003. you will need to buy or make a drift to remove the chuck.
 
You must log in or register to reply here.
Back
Top