Search found 59 matches

by calinb
Sun Jun 17, 2012 5:08 pm
Forum: Silencersmithing Forum
Topic: Fluid Dynamics CAD Tools for Silencersmithing
Replies: 11
Views: 1567

Re: Fluid Dynamics CAD Tools for Silencersmithing

What you are describing is a drawn out explanation of the term R&D. It's a common description of research flying (flight test) in aviation. Yes. It applies to R&D in many industries--especially those that don't or can't use computers in any significant manner, or where the costs of a failure are ve...
by calinb
Sat Jun 16, 2012 4:07 pm
Forum: Silencersmithing Forum
Topic: Fluid Dynamics CAD Tools for Silencersmithing
Replies: 11
Views: 1567

Re: Fluid Dynamics CAD Tools for Silencersmithing

... so that actual real-time x-ray/Infrared experimentation still remains the experimenter's best tool. ... Do not let the lack of software deter you. I commend you for not wanting to limit your thinking. Thanks, Historian! I have some ideas, and I'm more deterred by the nearly long permission slip...
by calinb
Sat Jun 16, 2012 1:39 am
Forum: Silencersmithing Forum
Topic: Fluid Dynamics CAD Tools for Silencersmithing
Replies: 11
Views: 1567

Re: Fluid Dynamics CAD Tools for Silencersmithing

While I continue to wait for my NFA stamps, would someone be kind enough to provide me with some links to tools or techniques or any other advice on how to get started with my own design investigations? Even comparing existing designs could be interesting. Thanks! Research a bit on this forum and y...
by calinb
Fri Jun 15, 2012 7:37 pm
Forum: Silencersmithing Forum
Topic: Fluid Dynamics CAD Tools for Silencersmithing
Replies: 11
Views: 1567

Fluid Dynamics CAD Tools for Silencersmithing

While I continue to wait for my NFA stamps, would someone be kind enough to provide me with some links to tools or techniques or any other advice on how to get started with my own design investigations? Even comparing existing designs could be interesting.

Thanks!
by calinb
Thu Jun 14, 2012 2:28 am
Forum: Silencersmithing Forum
Topic: CNC milling questions
Replies: 18
Views: 2001

Re: CNC milling questions

Here's a little inspiration, if you're on a budget: http://www.sporterizing.com/index.php?showtopic=3939 Also check out Doble Troble's chamber reamer making howto (linked in the above post). Notice that he uses a cheap Chinese mini-lathe, mini-mill, and bandsaw: http://personal.geeksnet.com/soderstr...
by calinb
Thu Jun 14, 2012 1:40 am
Forum: Silencersmithing Forum
Topic: CNC milling questions
Replies: 18
Views: 2001

Re: CNC milling questions

Basically, I want to be able to: - Make stamps / dies - Make embossed text in wood / metal - Make signs - Engrave stuff Unless I'm missing something, I don't think you need a $25,000 machine to do that? I have a cheap Chinese Sieg mini-mill and lathe that I got from Harbor Freight. Other retailers ...
by calinb
Thu Jun 14, 2012 1:07 am
Forum: Silencersmithing Forum
Topic: Cutting threads
Replies: 28
Views: 8471

Re: Cutting threads

Wolf, you correctly warn against using the threading dial. Using my hand crank on the headstock spindle allows me to accurately disconnect, wind back, position forward, and repeat. I once turned down a couple of Carlson Beretta/Benelli Mobil turkey shotgun choke tubes to make thin wall tubes for my...
by calinb
Mon May 14, 2012 7:29 pm
Forum: Silencer Talk
Topic: ATF continued.......
Replies: 3373
Views: 301533

Re: ATF continued.......

I hope I don't die of old age before I get the permission slips necessary to exercise my 2nd Amendment "right." It actually took the BATFE a few weeks after USPS delivery was confirmed for my Form 1s to cash my check on April 10th. I fully expect to wait about a year. By that time, I will be living ...
by calinb
Tue Jan 24, 2012 2:41 pm
Forum: NFA Weapons
Topic: NFA TRUST Turnaround time
Replies: 37
Views: 3787

Re: NFA TRUST Turnaround time

In the interest of keeping my two From 1 applications turnaround time to a minimum, I'd like to confirm that, although my wife and I are both Grantors and Trustees, only I need to file a Certification of Compliance with 18 U.S.C. 922(g)(5)(b), (5330.20). Also, given that I fully expect the bureaucra...
by calinb
Sun Jan 08, 2012 4:13 am
Forum: Silencersmithing Forum
Topic: Bare Minimum Lathe?
Replies: 31
Views: 8655

Re: Bare Minimum Lathe?

Of those two, the PM1027 would be vastly better for your purposes and significantly easier to use (power cross feed, geared head). Honestly, if I had known about it I would have bought that one over the G0602. Wow--yes!!! I may have to get one of those PM1027s. It has several things that you someti...
by calinb
Sun Jan 08, 2012 4:03 am
Forum: Silencer Talk
Topic: ATF continued.......
Replies: 3373
Views: 301533

Re: ATF continued.......

WooD wrote: Could be worst...imagine living in a state that doesn't allow any type of class 3 weapon.

I hate the wait, but I'm glad I can have something to wait for.
I prefer to imagine living in a state (or no state) that doesn't restrict our liberty to own any sort of firearm!
by calinb
Tue Jan 03, 2012 2:45 pm
Forum: Silencersmithing Forum
Topic: "BiCore" option with Paul's 7.5K .223 MonoCore design
Replies: 3
Views: 1126

Re: "BiCore" option with Paul's 7.5K .223 MonoCore design

What caliber Are you running this on? Look into 7068 aluminum it's head and shoulders stronger and harder than even 7075 I'll look it up. Heat resistance seems to be the biggest deficiency with 7075, relative to alloy or SS. Hi, <snip> I use a trusted geometry for aligment. I don’t like screw/unscr...
by calinb
Tue Jan 03, 2012 3:47 am
Forum: Silencersmithing Forum
Topic: "BiCore" option with Paul's 7.5K .223 MonoCore design
Replies: 3
Views: 1126

"BiCore" option with Paul's 7.5K .223 MonoCore design

I was looking over Paul's plans and thinking about building the can with a 3AL-2.5V titanium tube and light weight 7075-T6511 core. http://www.silencertalk.com/forum/viewtopic.php?p=743597#p743597 It struck me that the expansion chamber / ported tube section of the monocore could be machined in stai...
by calinb
Mon Jan 02, 2012 11:41 pm
Forum: Silencer Talk
Topic: ATF continued.......
Replies: 3373
Views: 301533

Re: ATF continued.......

jta wrote:This thread makes me sad. :(
<snip>
Now we must tolerate half a year of rights infringement to exercise something that's "protected" by the Constitution? I think it's all part of Obama's promise to take gun control (disarmament of the public) "under the radar."
by calinb
Sun Jan 01, 2012 5:07 pm
Forum: Silencersmithing Forum
Topic: Aluminum for .223 Can
Replies: 18
Views: 4337

Re: Aluminum for .223 Can

What I do is drill a whatever diameter hole you plan on using in stock vertically in a mill (I use our HAAS VF-2YT because it has thru-spindle coolant and our lathe's high pressure coolant just leaks out from the tool holder) then put the piece in the lathe, use a live center in one end and hold on...
by calinb
Wed Nov 09, 2011 6:15 am
Forum: Silencersmithing Forum
Topic: Bare Minimum Lathe?
Replies: 31
Views: 8655

Re: Bare Minimum Lathe?

I always say buy as big as you can store and afford. After that a minilathe is a perfect addition. It is a major pita to chuck up a small part in a big lathe. A mini lathe is a perfect compliment. I agree. I'd like to go as big as I can, after an upcoming relocation and move, but I also wish I'd bo...
by calinb
Wed Nov 09, 2011 6:10 am
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

OK, how about this approach. The registered silencer has to be the length you register it at. The barrel length is irrelevant from the law's point of view. So, you can go with a muzzle can and cut& thread the barrel a little longer than you think you need. Then trim back 'till there is no more soni...
by calinb
Tue Nov 08, 2011 4:31 am
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

That sounds like a good start. You have 'till the stamp comes to think about it. In fact there is no time limit after the stamp comes (I think there is no limit) anyway, you have plenty of time to decide what you will do. As long as you design a rock solid, square mount then scre on should be fine....
by calinb
Mon Nov 07, 2011 7:44 pm
Forum: Silencersmithing Forum
Topic: Bare Minimum Lathe?
Replies: 31
Views: 8655

Re: Bare Minimum Lathe?

I have an HF mini with a stretched 16" bed. You can make a bunch of stuff on the HF minis (lathe and mill) but they can become major projects themselves in order to gain the functionality that is customary in professional tools. Some enthusiasts call the minis "kits." I've made countless improvement...
by calinb
Mon Nov 07, 2011 7:43 pm
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

I got my P1 but need to finalize some aspects of the design before I'll know the length for my Form 1. Mike didn't answer my PM here or my email to Tornado Tech so I'll just need to jump-in, with the help forum members have already provided to me. There appears to be plenty of "meat" on the front si...
by calinb
Fri Oct 14, 2011 2:37 am
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

Artful wrote:liner was threaded and bushing was threaded to match in a close interference fit <snip>
That makes sense. Great idea and the photos look great too. Thanks!
by calinb
Thu Oct 13, 2011 6:39 pm
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

sleeved P-1 barrel can be threaded but you have to make a bushing drove my machinest friend to drink I think. Is the bushing welded onto the barrel? I thought about finding someone who can run a TIG. I've also been thinking about doing an integral with a ported barrel. I'd port the barrel just forw...
by calinb
Thu Oct 13, 2011 6:00 pm
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

Call Mike at Tornado Tech. He threaded mine and told me about the issues. I got the impression that he's threaded more than a few and has run into the various pitfalls. Maybe a call or an email to him would be worthwhile. <snip> Thanks! Turns out Mike is local. 8) I work only two or three miles fro...
by calinb
Wed Oct 12, 2011 8:46 pm
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

I thought of a couple more P1 questions. 1. Are the sleeved P1 barrels too thin for all appropriate threads or are they only problematic with "standard" threads (1/2 x 28, etc.)? I'm interested in doing a Form 1 build so I could use any thread that I desire. 2. If the sleeved P1 barrels are too thin...
by calinb
Wed Oct 12, 2011 1:40 pm
Forum: Handgun Talk
Topic: Integral P38/P1 for best performance : length ratio?
Replies: 17
Views: 2471

Re: Integral P38/P1 for best performance : length ratio?

<snip> In general, the P38 cycles well with out a booster. Don't use a P1, definitely get a real WWII P38. The P1 has a barrel liner pressed into the barrel and will screw you when you go to thread it. The early ones were not sleeved. You can get a Russian refurb for reasonable money and it will be...