Re: [atlas_craftsman] Greetings! New user to the group with a newly acquired TH42
- The half nuts and some of the other gears and levers in the apron are Zamac, as are most of the gears in the gear train. On some lathes, the lead screw bearing bracket on the far right is Zamac or brass. In any case, cleaners that attack zinc, aluminum or brass aren't a good choice when cleaning complex unknown equipmentRex BossePortland, OregonOn Wed, May 8, 2013 at 6:50 AM, J <rpoz28cam@...> wrote:Good Morning Dennis,
Thank you for your good tips. I presume the Zamac parts consist of the thread cutting gears, aren't they potted metal? How about the half nut assembly, isn't it brass or bronze oil-light or however call it? The ways have some light rust in some areas and I am trying to avoid degrading that surface at all. The first thing I want to do is remove the carriage assembly from that way and free it up, (been real careful not to move the carriage over the way yet!) I suspect the bearings and gears will need a really good cleaning. I know the carriage drive screw is really full of grime and old grease, so I do have my work cut out for me.
From: DennisF MacIntyre <a1g2r3i@...>
To: "email@example.com" <firstname.lastname@example.org>
Sent: Tuesday, May 7, 2013 11:55 AM
Subject: Re: [atlas_craftsman] Greetings! New user to the group with a newly acquired TH42
Dear J L Moon 2013/05/07 12:38Be careful how you clean the zamac parts that you do not dissolve them. In particular do not use any harsh cleaners like carburetor cleaners or such. Others may expound on this (please) (Not sure, but I think lye would dissolve the gears.)If steam is available and chosen, before the metal cools... as soon it is dry, hit is with WD40 as it takes water away. It also lubricates, but in my opinion lubricates little. For the bearings I suggest a pump oil such as what home furnace boilers use. I bought some at Canadian tire. It is an International Standard 68 hydraulic oil. For the ways, use a 68 Way oil of the same standard. I.S.O. International Standard something I think??? The 68 hydraulic oil can lubricate the gears as well. It will also rinse dust and such off of them.keep smilingdennis mac