View Full Version : Recommend a cutting/ tapping fluid?
05-22-2009, 02:34 PM
Could I get some suggestions as to what is a good cutting/tapping fluid for the usual ferrous alloys we use in hobby gunsmithing?
I have had a recommendation to use Molybdenum Disulfide, but also can get "Tap Magic" for free at work.
Also, could someone recommend a preservative oil/ coating to protect a gun project while it's in "the white" between machining operations, possibly days apart?
05-22-2009, 03:50 PM
free tap magic would seem the best and only way to go.
I use an old brand of synthetic 2 cycle oil that would BEST for me, I posted about this in the past it outpreformed all others for me personaly.
05-23-2009, 12:55 AM
Thanks, then Tap Magic it is.
Any thoughts on a preservative?
05-23-2009, 03:28 AM
For a quick and dirty preservative on bare ferrous parts I use WD-40. It works well here in Arizona even with the rain we are having today and it is extremely convienient.
05-24-2009, 07:10 PM
yes, wd40 is great, although dont use it in a garage; dinner that night tastes like lubricant
05-25-2009, 01:52 AM
Just NEVER get WD-40 near any bearings, it'll dissolve the grease, carry it away, and promptly evaporate, leaving your bearings to die.
05-25-2009, 08:23 PM
I use Dexron. Acts as a cutting fluid and preservative.
05-26-2009, 12:50 AM
As in Dexron the tranny fluid?
I thought it was a vegetable based oil.
I know when we quenched some blades in it, serious smoke effects!
Are cutting/ milling operations "cool" enough to prevent filling the shop with smoke?
05-26-2009, 01:23 PM
ATF is mineral oil.
Look for a can of a product called "Tapmatic".
Tapmatic Cutting Fluids (http://www.skymartsales.com/lpslabs/tf.asp)
05-29-2009, 04:03 PM
The best stuff we've used at work is union butterfield tapping and drilling fluid. Its thick and stays on the tap better than the other watery fluid. The tap magic works well also but makes a mess.