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Delta Dp-600 Drill Press Restoration (photo Intensive)

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GarageGuy

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#1
I just finished restoring a 1956 Delta DP-600 drill press. A friend found it at an estate sale. It was the last day of the sale, and this drill press was so ugly that no one wanted it. I got it for $65.

This is my first restoration thread, so let me know if I didn't do it correctly.

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I had to haul it out of an old barn on a hand cart. On the way out the door there was a 6" tall threshold, and then a 6" drop back to ground level. Coming down off the threshold the hand cart bounced and the drill press tumbled off. I jumped out of the way and let it fall into the grass. One of the bars on the handle broke off, but that's an easy fix so I wasn't concerned. Just happy to get it out without damage to life and limb.

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I hauled it home in the back of my minivan and started to disassemble it.

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This machine was so rusty, it was a tetanus shot waiting to happen. Someone painted a hideous green over the original Delta gray, and that had to go. The green paint was so bad it came off in sheets in several places. I wire brushed everything with an angle grinder and twisted knot wire brush so the green paint wouldn't plug up my sand blast cabinet.

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Then sand blasted, primed, and painted with Rustoleum Machine Dark Gray paint.

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I also put new bearings in the spindle and in the electric motor so it would run as good as it looked.

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The table sits on a 3 1/2" bearing so it will swivel easily even though it is very heavy. That bearing was crushed and all but two balls were missing. I straightened the bent bearing housing and ordered new 3/8" ball bearings to rebuild it with.

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I cleaned, painted, and put the new bearings in the motor.

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I'm at the photo limit for this message. Continued...

GG
 
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GarageGuy

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#2
Continued...

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I put a new electrical cord and power switch on it. There was no power switch before, and all I had was a household style light switch, but it turned out OK. Now it looks and runs just like brand new!

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Should last at least another 60 years now!

GG
 

GarageGuy

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The drill press was $65, the paint and primer were $55, and the new bearings were $150. The power cord, switch, and a new belt were $30, so I have a grand total of $300 in it. I put a 1/2" keyless drill chuck on it, but I already had that so I didn't count it in the cost.

It has 5 spindle speeds. 684, 1124, 1790, 2815, and 4640. I work mainly with metal, so I'll be working with the two slowest speeds almost all the time.

Here is a video of it running at the highest speed:


GG
 
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mattthemuppet2

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#4
that's a beauty, well done!
 

jpfabricator

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#5
Looks great! Some old school pinstriping would make it look awsome!

Sent from somewhere in East Texas by Jake Parker!
 

Silverbullet

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#6
Very nice job , hey wanta come help with mine? Mines the same vintage but with the power feed. Right now ive got 4 old machines to restore plus a garage to clean out and into a storage container. Ive been forever trying to sell things made up my mind to just buy a container. Hope you have many years of service with it. Just be safe in all you do. It sucks to be messed up I know. How come all machines look great in gray?
 

GarageGuy

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The name plate on the front was missing, and had been replaced with a piece of aluminum from what looked like an old John Deere sign. I have a friend in the graphics industry who says he can reproduce the original artwork on the name plate for me. That will make the front of the machine look much more original. Can't wait to see what he can do.

GG
 

RandyM

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#8
Fantastic, very well done GG!
 

EmilioG

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#9
Good job! I was gifted a Delta that looks just like this one. I have to get it home to do a R&R.
Does your Delta have a JT spindle or the threaded type? Thanks
 

GarageGuy

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#10
Good job! I was gifted a Delta that looks just like this one. I have to get it home to do a R&R.
Does your Delta have a JT spindle or the threaded type? Thanks
Mine has a JT-33 taper on the spindle. I also have a DP-220 drill press, and it has a JT-33 tapered spindle as well.

Sent using Tapatalk from someplace deep inside the garage
 

calstar

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#11
Great work, don't be afraid to get it dirty! Brian
 

GarageGuy

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Great work, don't be afraid to get it dirty! Brian
To tell the truth, I can't WAIT to get it dirty. My shop is a working shop, and the drill press is far and away the prettiest thing I own. Gotta get it used so it looks like everything else (but still works like new). :grin:

GG
 

GarageGuy

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My friend, the graphic artist, came through for me on a replacement name plate. The original name plate had been removed and replaced with a plain piece of aluminum. Unfortunately, the only artwork available for the name plate was very low resolution, and he couldn't make a good color replica from it. He made an engraved stainless steel name plate for me instead. I like it!

GG

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ChipsAlloy!

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#14
Very nice
 

randyjaco

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#15
Plus whatever
Great work

Randy
 

Tony Wells

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#16
That turned out really well. You should be proud. I didn't see any area you skimped on, so like you said....many more years of service, and the satisfaction that you gave it a new life.
 

RHayes

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#17
Nice work. This caught my I as I also recently acquired one. Mine had the long #2 MT spindle and was 3 ph. All I have in it is a VFD and keyed chuck and like it a lot. My table is a little bit out front to back and I was wondering if you noticed any way to adjust this when you had yours apart?
 

wawoodman

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#18
Very nice job!
 

EmilioG

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#19
Where can I buy the spindle bearings for a similar machine? Are other parts available? I'm taking ownership of a similar
Delta DP soon and would also like to tackle a complete restoration. Thanks. Great work! Did you check the spindle TIR?
 

GarageGuy

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#20
I bought my bearings at: Bearing Headquarters in Elk Grove, IL. The number is: 847-640-6490. Talk to Jay. The bearings are unusual, but available. It's an older style, and if you order by numbers alone it won't be what you want. Give Jay the number and close-up photos of the bearing. If you tell him it's for a Delta drill press, he may even remember mine. Good luck with your project!

Sent using Tapatalk from someplace deep inside the garage
 

GarageGuy

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#21
Nice work. This caught my I as I also recently acquired one. Mine had the long #2 MT spindle and was 3 ph. All I have in it is a VFD and keyed chuck and like it a lot. My table is a little bit out front to back and I was wondering if you noticed any way to adjust this when you had yours apart?
My apologies, I didn't see your post until now. I didn't see any way of adjusting the table from front to back on mine. It just has a bolt going through to hold the table to the post bracket. I'm sure if you took it apart it could be shimmed, filed, or ground back into alignment unless it has been badly bent. I would try shimming first as it's the least destructive.

GG
 

jhuston

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#22
Nicely done; I have a 17-210 ( slow speed pulleys, #2 Morse taper) 600 series, and it's hands down the best drill press I've personally used. If you run across a second generation 17" Delta with the "T"-slotted table, it can be bolted right on the older 17" and opens up a lot of workholding options. I've added that table to mine, and installed a cut down Delta Unisaw fence, which is another underrated accessory for a drill press.
You're going to really enjoy that drill press and all it can do.
-James Huston
 

GarageGuy

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#23
I wish I had the slow speed pulleys. This one has high speed pulleys and is better suited for wood working. The slowest speed is good for metal as long as the drill bits are less than 1/2". Maybe someday I'll run across a set of low speed pulleys, or better yet, someone who wants to trade. :grin:

GG
 

12bolts

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#24
Great resto GG. It looks really nice. Is there any room to fit an idler pulley in there to slow it down. Even at 684 RPM you will find that too fast for some work.

Cheers Phil
 

GarageGuy

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Great resto GG. It looks really nice. Is there any room to fit an idler pulley in there to slow it down. Even at 684 RPM you will find that too fast for some work.
Thank you! I think there should be enough space to do that, and someday I would like to try it. About 1/3 of the current speed would be good for most of the metal work I do. I think the tricky part will be getting the exact matching pulley as an idler so you don't have to re-adjust the motor each time you change the speed to maintain proper belt tension. Right now the pulleys are a perfect match, and you can use any of the 5 speeds by just walking the belt up or down the pulleys without adjusting the motor. Quick and easy!

GG
 

12bolts

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#26
If you reused the motor pulley as the idler and just put a single small pulley on the motor shaft you could use that to drive the largest diameter on the idler. That would drop your RPM considerably and still leave you with matched pulleys. You would lose one speed 'tho. Unless you added an extra single large dia. pulley to the idler as well.
Personally, my drill press has 12 speeds, but I rarely change it.

Cheers Phil
 

GarageGuy

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#27
If you reused the motor pulley as the idler and just put a single small pulley on the motor shaft you could use that to drive the largest diameter on the idler. That would drop your RPM considerably and still leave you with matched pulleys. You would lose one speed 'tho. Unless you added an extra single large dia. pulley to the idler as well.
Personally, my drill press has 12 speeds, but I rarely change it.
That's a great idea. I hadn't thought of doing it that way, but that would be much quicker and easier than what I was thinking. The pulley will come off the motor easy because I used anti-seize when I put it back together. I had to fight to get it off for the rebuild, and vowed I wouldn't let that happen again 50 years from now! :D

GG
 

GarageGuy

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#28
12bolts, I took your advice and moved the matching pulley to the center column, and got another step pulley from a friend for the motor. It works like a charm! Now I have 283 RPM on the spindle instead of 684 RPM. Here is the build:
 

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GarageGuy

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#29
Here is a video of it running:

 

56type

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#30
Greta job on the resto. !! I just picked up this one and had no idea what to do with it til I saw this thread. Have no idea what year/model this on is since only the serial# plate & "DP 220" cast into the head gave me any clue. Searching for any parts diagrams so I can do a full resto. on it. Some pics.....





 
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