Search found 2933 matches

by NP317
Fri Jul 03, 2015 11:07 am
Forum: General Discussion
Topic: Slitting saw too tight to remove
Replies: 22
Views: 3521

Re: Slitting saw too tight to remove

My cheap slitting saw arbor has a center section machined smaller than the finished ends, which index into the R8 spindle. When the mounting cap gets stuck after making a cut, I hold the arbor in the vice, by gripping the smaller center section, thereby not marring the machined mounting surfaces. I ...
by NP317
Mon Jun 29, 2015 1:55 am
Forum: Live Steam
Topic: Custom Lost Wax Castings - CAD Model to Bronze or Aluminum
Replies: 15
Views: 4786

Re: Custom Lost Wax Castings - CAD Model to Bronze or Alumin

Thank you for the kind comments, Russ. But, I would like to point out that Steve Zuideveen took the lead on the improvements to the arch bar trucks. Even though he is no longer a partner in Allen Models, he wanted to see this project through to completion, and I thank him for that. We have agreed t...
by NP317
Mon Jun 29, 2015 12:12 am
Forum: Live Steam
Topic: Custom Lost Wax Castings - CAD Model to Bronze or Aluminum
Replies: 15
Views: 4786

Re: Custom Lost Wax Castings - CAD Model to Bronze or Alumin

At the now-closing Train Mt. Triennial meet, Marty Knox (new Allen Models) had some excellent new cast iron scale axle boxes on display. They are designed for use on the new Allen arch-bar trucks. The casting are even cored to use ball bearings. I will acquire a set soon (after Marty returns to his ...
by NP317
Thu Jun 18, 2015 11:27 am
Forum: Live Steam
Topic: HELP with a Pump
Replies: 41
Views: 7937

Re: HELP with a Pump

The steam-end o-ring would best be made from Viton, which will withstand steam temperatures better.
The water end can be a good quality "regular" o-ring for water use.
~RN
by NP317
Thu Jun 18, 2015 11:20 am
Forum: Milling Machines
Topic: Machining a cutout on a CNC mill
Replies: 13
Views: 3902

Re: Machining a cutout on a CNC mill

NP317, thanks for the info. I have been reading a lot about roughing mills, but I have not had a chance to try them yet. Are they that efficient? How much more depth of cut can you do with roughing mill compared to standard end mill? For example, I am using a very shallow depth step of 0.015" now, ...
by NP317
Wed Jun 17, 2015 11:57 pm
Forum: General Discussion
Topic: Variable Frequency Drive
Replies: 12
Views: 3047

Re: Variable Frequency Drive

The VFD will likely require "programming" by entering information as specified in the op manual. These numbers define operating parameters, which match the VFD output with the specific usage. This process should be reasonably easy to learn, as I managed to learn to program the large VFDs we used on ...
by NP317
Wed Jun 17, 2015 11:47 pm
Forum: Milling Machines
Topic: Machining a cutout on a CNC mill
Replies: 13
Views: 3902

Re: Machining a cutout on a CNC mill

When milling straight cuts through metal, I usually first rough cut using a Roughing End Mill. These EMs require less power to cut, can make deeper cuts, have good chip ejection, and leave a reasonable surface to finish cut with a good (sharp) end mill. This takes a little more time than hogging str...
by NP317
Wed Jun 17, 2015 11:34 pm
Forum: 3-in-1 Metalworking Machines
Topic: G0516 Pulley/Belt question
Replies: 13
Views: 15047

Re: G0516 Pulley/Belt question

Converting 31.5" to metric, it is a suspicious 80 cm! I bet you need a metric belt for this machine.

If NASA could lose a Mars spacecraft because of failure to properly convert SAE to Metric, it makes sense that Grizzly might have made a similar mistake! A little less serious, though...
~RN
by NP317
Wed Jun 17, 2015 2:18 pm
Forum: General Discussion
Topic: Here Goes
Replies: 35
Views: 9189

Re: Here Goes

Welcome.
What are your questions?
~RN
by NP317
Fri Jun 12, 2015 9:55 am
Forum: Riding Scale Railroading
Topic: Budget Build is complete
Replies: 7
Views: 2296

Re: Budget Build is complete

Chris:
I look forward to sharing tracks with you at Train Mt.
Assuming, of course, that we can actually get out of Central Station, due to the expected huge congestion!

I hope to do my time volunteering to assist the masses while there.
It will be a meet for the ages.
~Russ
by NP317
Fri Jun 12, 2015 9:47 am
Forum: Live Steam
Topic: Berkshire tender Brake cyclinders
Replies: 34
Views: 7045

Re: Berkshire tender Brake cyclinders

Yes, beautiful work. LOTS of work.
I'm lazy enough to have tried using Speedi-Sleeves. I wonder how successful that might be?

I also have a set of expanding mandrels, and have used them for years. They can be invaluable, as shown in this project thread.

Well done.
~RN
by NP317
Thu Jun 11, 2015 7:00 pm
Forum: Live Steam
Topic: LITTLE ENGINES WILL NOT BE AT TRAIN MOUNTAIN
Replies: 2
Views: 1180

Re: LITTLE ENGINES WILL NOT BE AT TRAIN MOUNTAIN

Mike:
So sorry to hear of your unexpected change in plans. Many people were looking forward to the opportunity to see you in person, myself included. Stay safe. All follows from that.
~Russ