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Author Topic: Tried doing some milling on my new old Cook's AC-36 today???  (Read 2124 times)

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Offline kelLOGg

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #20 on: December 18, 2017, 07:32:50 PM »
I clean gas tanks with old battery acid. The acid will eat the rust right up.
Flush with baking soda and water...Wear glasses..

Put a temporary plug in place of the oil drip and after (someway) swishing the acid  drain it thru the hole? Careful not to eat up the threads.
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline muggs

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #21 on: December 18, 2017, 07:58:57 PM »
My friend made a 2 part kit called Kreme. One of the places that sold it was JC Whitney. It consisted of phosphoric acid and a liquid plastic to coat the tank.   Muggs

Offline starmac

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #22 on: December 19, 2017, 01:22:48 AM »
Kreme used to be sold in motorcycle shops/dealers. I have no experience, but iirc it got a reputation for flaking off after a year or two.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline wascator

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #23 on: December 19, 2017, 09:43:32 AM »
I fixed a tank on an old Allis-Chalmers tractor I rebuilt about 25 years ago, with tank sealer from Bill Hirsch (antique car parts guy). It was white and thick and tank is still fine.
The tank was so bad, it looked like a piece of screen wire on the bottom, but the tank was the teardrop kind that was exposed at the rear of the hood, so I had to do something to try to save it. I basically boiled it in hot water and lye until it was completely clean, sealed the bottom with a thin layer of fine woven fiberglass cloth + resin (enough so the sealer would not run out), then poured the sealer in and rolled the tank about to distribute it; poured any extra out. Once I did a little filler work and sanding on the outside and painted it, it looked fine.
Hope this helps/encourages you.

Online PC-Urban-Sawyer

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #24 on: December 19, 2017, 10:16:33 AM »
If I understand the design of the mill, the tank is integrated as part of the mill power head framework and is not readily removable. This would make it difficult to use any solutions that involve "swishing" cleaner or coating compounds around inside the "tank"...

Herb

Offline starmac

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #25 on: December 19, 2017, 12:37:15 PM »
Yep, pretty hard to swish a mill around.
I am not crazy about it being a structural part of the mill.
I would be tempted to fill it with something that would stabilize and stop the rust, then come up with a removable tank for lube bypassing it.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline customcutter01

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #26 on: December 19, 2017, 08:17:24 PM »
Yes the "tank" is a section of 2x6 tubing approximately 36" long that is welded into the head and is structurally part of the mill head.  Still debating what I'm going to do.  I think I'm going to try dis-solving the rust (almost 2" deep in the bottom of the tank), with some type of acid, then neutralize it.  If I can do that I will always use diesel as a lubricant in the future.  If I can't dissolve the rust I will either cut that section out and replace it, or add a small poly tank of some sort to hold lubricant.
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Husqvarna 570 rebuilding now
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Offline starmac

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #27 on: December 19, 2017, 08:28:53 PM »
2X6X36 doesn't seem like it would hold all that much liquid, I might be tempted to fill it with evaporust, once I got the loose rust out of the bottom.

If there was a drain in the bottom, I would be tempted to put compressed air to the bottom, while using a shop vac on the fill hole and try to get the most of the loose rust out.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline kelLOGg

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #28 on: December 19, 2017, 08:33:00 PM »
You might try using a peristaltic pump to get agitation in the tank. The plastic lines those pumps use will hold up to the acid.
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline Dave Shepard

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #29 on: December 19, 2017, 08:34:50 PM »
2x6x36 is 1.87 gallons. Less if you have to subtract the wall thickness of the tubing.
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Offline starmac

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #30 on: December 19, 2017, 08:48:14 PM »
It would be worth 2 gallons of evaporust, it wont hurt anything and doesn't need neutralizing. Iirc it also treats the metal so it will not rust again.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline Don P

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #31 on: December 22, 2017, 09:23:30 PM »
I've never done it, is this where setting up some kind of electrolysis would dissolve it. Or at the least it would remove that evening shadow  ???.

Offline kelLOGg

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #32 on: December 23, 2017, 03:56:22 PM »
Quote from: customcutter01 link=topic=99102.msg1532608xmsg1532608 date=1513479127
The tank is a section of 2X6 tubing built into the frame.

That sounds small. My manual Cook (MP32) has lube tank measuring 34" x 6" x 3. Wall thickness is probably 3/16" - that's what the main rails are.

Bob
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline customcutter01

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #33 on: December 28, 2017, 10:55:42 PM »
Yes, tank is actually 3X6.  Sulfuric acid didn't touch it, partially filled it added with H20, added sulfuric acid (drain cleaner), and let it set for 3-4 hours until it quit foaming, zilch, nada, nothing.  Still had several inches of crap in the tank.  I stuck a stick in the tank and felt the consistency of the material it was like a hard grease, similar to what you would find in an old time "grease trap".  We tried hot boiling water and Dawn detergent for 2 days, 4 tank fulls and a 36" bottle brush.  Finally got all of the greasy junk out of the tank.  Pulled the lines and went to Lowes and got 2 micro spray lines with valves and new brass fittings to fit.  Everything is working great now, and it will only get diesel from now on.

Also checked the alignment on the rollers.  The "good" side was out 1/2" over 20" straight edge that I used to measure with.  So when I got it aligned I just started cranking on the "bad" roller.  It was still out 1/2" when I did the first measurement.  Everything is properly aligned now and cutting so much better and quicker.

thanks,
Ken
Husqvarna 350 decked,ported,pop-up piston by me
Husqvarna 450
Husqvarna 570 rebuilding now
Husqvarna 262XP
Stihl 210
Cooks AC-36 Hyd Bandsaw Mill
New Holland TN65D

Offline customcutter01

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #34 on: December 28, 2017, 11:01:41 PM »
Forgot to mention, we milled more lumber today, than we did in 3 days last week! 8)
Husqvarna 350 decked,ported,pop-up piston by me
Husqvarna 450
Husqvarna 570 rebuilding now
Husqvarna 262XP
Stihl 210
Cooks AC-36 Hyd Bandsaw Mill
New Holland TN65D

Offline KamHillbilly

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Re: Tried doing some milling on my new old Cook's AC-36 today???
« Reply #35 on: December 29, 2017, 08:22:24 AM »
 My homemade mill has a similar tank , I added a separate tank made out of 4" abs pipe to run water pinesol mix when wanted ,made it easy to remove if needed . similar previous owner hade water in the inframe tank but wasn't as to the extent of rust you had.
Homemade Bandmill ,Clark 664b ,Case 780b ,Jonsered 670,630


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