My company recently purchased a 1224 machine for modifying the plumbing on gas wells. We use the machine to fabricate nipples, 3" schedule 80 pipe.
I am sort of the default user for this machine. In the past I've done a fair amount of hand cutting and hand threading (to 2" sched 80), and I've been told to always use some cutting oil on the cutting wheel.
This past week there's been some argument over that, some people saying that lubrication is not necessary for the cutting wheel, whether hand-held or in the machine at 36 rpm. Ideas on this?
Any other hints on the use of this machine would be welcome. I have the manual and have read it. I found this past week that I can only get about two dozen thread cuttings (12 nipples) done before it's time to change the oil and clean the sump- the flow was decreasing. Figure to make the threading dies last as long as possible.
Anybody have a ballpark estimate on how many threading operations (about 2.5" in length) on 3" schedule 80 pipe before die replacement is necessary?
Any advice appreciated.