Search found 17754 matches

by Harold_V
Tue May 19, 2020 1:42 am
Forum: Riding Scale Railroading
Topic: Breaking Small Drill Bits
Replies: 13
Views: 795

Re: Breaking Small Drill Bits

Doesn't surprise me a bit, Greg. When I worked at Sperry, the sheet metal shop was adjacent to the machine shop. They used air drills for all holes for the riveting that was accomplished on the brake system skin, so they were constantly drilling. While they were drilling aluminum, not steel, it made...
by Harold_V
Tue May 19, 2020 1:30 am
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 1094

Re: Cylinder honing

If you're not familiar with Sunnen hones, it may help you to know that it would likely be cost prohibitive (if you choose to do the work yourself) for you to go that route, thus seeking a shop with one is your best choice. Here's why. Bore size will dictate the size of mandrel you'd need, then you'd...
by Harold_V
Mon May 18, 2020 3:39 pm
Forum: Live Steam
Topic: 2.5" Monitor Injector Update
Replies: 2
Views: 417

Re: 2.5" Monitor Injector Update

A tragedy, to be sure. In my many years of machining, primarily defense and aero-space, it was often necessary to submit a "first article" for inspection. When doing so, any errors that may have been made are detected, so corrections can be made before the production run. Setup time can be extensive...
by Harold_V
Mon May 18, 2020 3:18 am
Forum: Riding Scale Railroading
Topic: Breaking Small Drill Bits
Replies: 13
Views: 795

Re: Breaking Small Drill Bits

Heh! For starters, if you've having trouble breaking HSS drill bits, don't even think about carbide, which is akin to drilling with glass at that diameter. It's hard and heat resistant, but fragile beyond belief. It's not clear how you're drilling, or what material you're trying to drill, but to get...
by Harold_V
Sat May 16, 2020 3:39 pm
Forum: The Junk Drawer
Topic: Does anyone else get this message
Replies: 11
Views: 550

Re: Does anyone else get this message

I'm using Avast free. Doesn't mean it's a good choice, but it has worked nicely for me. Truth is, I'm not able to judge these things, as I don't understand computers well.

H
by Harold_V
Fri May 15, 2020 1:29 am
Forum: Gunsmithing
Topic: 1911 Project
Replies: 61
Views: 17752

Re: 1911 Project

Just letting you know that I'm following your thread, Glenn. Keep up the good work.

H
by Harold_V
Thu May 14, 2020 3:20 pm
Forum: Live Steam
Topic: Displacement lubricator questions
Replies: 13
Views: 1021

Re: Displacement lubricator questions

gwrdriver wrote:
Thu May 14, 2020 7:32 am
As for Gravity, it has very little effect on the process, except that it pulls the water to the bottom of the reservoir,
Harold_V wrote:as it relies on gravity to function.
That was my point. Without gravity, it wouldn't function.

H
by Harold_V
Thu May 14, 2020 1:17 am
Forum: Live Steam
Topic: Alcalde & Coalfield High Line
Replies: 198
Views: 92067

Re: Alcalde & Coalfield High Line

There's not much in this world prettier than those California Poppies! Such a lovely shade of orange.
Looking good, Jack!

H
by Harold_V
Wed May 13, 2020 1:24 am
Forum: Live Steam
Topic: Displacement lubricator questions
Replies: 13
Views: 1021

Re: Displacement lubricator questions

I'm no expert on displacement lubricators, but it is my opinion that it can do neither, as it relies on gravity to function. That said, if it can introduce a drop of oil to a steam line, the steam itself will propel the oil where it is needed, with no regard to gravity. If the steam can penetrate a ...
by Harold_V
Mon May 11, 2020 4:43 pm
Forum: Gunsmithing
Topic: Cartridge holder for lathe
Replies: 4
Views: 478

Re: Cartridge holder for lathe

I can see where the use of a steady could be beneficial and could replace the use of the sleeve normally used. Delrin AF would be quite acceptable, assuming the cut wasn't prolonged, and it most likely wouldn't be. The steady could be placed just behind the shoulder, which would provide plenty of su...
by Harold_V
Mon May 11, 2020 4:33 pm
Forum: Milling Machines
Topic: Two flute v. four flute end mills
Replies: 7
Views: 610

Re: Two flute v. four flute end mills

...but also polished flutes, which discourages chip welding. If I have a 2-flute end mill without polished flutes, could I use a dremel and polish them? I'd have to stay away from the very edge to make sure I don't dull it. It stands to reason that anything you can do to the flute surface to decrea...
by Harold_V
Mon May 11, 2020 1:49 am
Forum: Milling Machines
Topic: Two flute v. four flute end mills
Replies: 7
Views: 610

Re: Two flute v. four flute end mills

Yeah, a four flute is generally a poor choice for aluminum, as it not only has limited space in the flutes to deal with the generated chip, but they are often finished, which encourages chip welding. If you're doing a lot of aluminum, it's not a bad idea to invest in an end mill made specifically fo...