Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 68 users online :: 5 registered, 0 hidden and 63 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

JSR wants a lathe/mill thread -> JSR buys Sherline

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
Sponsored 
  • Author
    Message

Unread postAuthor: POLAND_SPUD » Thu May 19, 2011 12:07 am

You guys do know Judgement day is this saturday, right?
I was going to say that

Yeah as LeMaudit said you probably don't need a lathe...
  • 0

Children are the future

unless we stop them now
User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: jackssmirkingrevenge » Thu May 19, 2011 12:27 am

POLAND_SPUD wrote:Yeah as LeMaudit said you probably don't need a lathe...


It would be good to have a lathe, for bolts, pistons etc. but a mill is also an asset. Listen to me, the four horsemen must really be approaching! I blame the miniboy :P
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jrrdw » Thu May 19, 2011 1:31 pm

My lathe paid it's self off in about 10 months, has paid for it's extra tooling and the rest is pure profit :D
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6540
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: LeMaudit » Thu May 19, 2011 2:15 pm

I blame the miniboy


Don't you dare ! :lol:


My lathe paid it's self off in about 10 months,


If you have an entrepreneurship soul, you can make easy money yes.
All my equipment, lathe, mill, band saw, drill press, etc etc... was refund in a year selling little machined and resin cast pieces to miniature modelers.

But if it's for work, it become not fun very quickly.
Now I understood that, I try to only have fun with the tools :-D
  • 0

User avatar
LeMaudit
Donating Member
Donating Member
 
Posts: 665
Joined: Thu Apr 16, 2009 2:48 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 20, 2011 12:17 am

Well, I'm pretty much sold on the idea of getting a small lathe/mill combo and have set aside the funds. Need to do some digging before parting with my hard earned though.
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Crna Legija » Fri May 20, 2011 12:44 am

jackssmirkingrevenge wrote:Well, I'm pretty much sold on the idea of getting a small lathe/mill combo and have set aside the funds. Need to do some digging before parting with my hard earned though.



you will be on our side, when you take over right? :lol:
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 20, 2011 1:56 am

When the day of the zombie apocalypse dawns, we will all be on the same side!
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Sponsored

Sponsor
 


Unread postAuthor: jrrdw » Fri May 20, 2011 7:38 am

jackssmirkingrevenge wrote:When the day of the zombie apocalypse dawns, we will all be on the same side!


Does that mean we can take refuge in the epoxy cave? :P
  • 0

When life gives you lemons...throw them back they suck!
User avatar
jrrdw
Donating Moderator
Donating Moderator
 
Posts: 6540
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Country: United States (us)
Reputation: 25

Unread postAuthor: LeMaudit » Fri May 20, 2011 7:44 am

Does that mean we can take refuge in the epoxy cave?


Its not cured! NOT CURED! Arrggghhhhh..... :violent1:
  • 0

User avatar
LeMaudit
Donating Member
Donating Member
 
Posts: 665
Joined: Thu Apr 16, 2009 2:48 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 20, 2011 7:45 am

jrrdw wrote:Does that mean we can take refuge in the epoxy cave? :P


Once you're done paddling across the Atlantic, sure ;)

Back on topic, one for you machinists out there - you know who you are - how difficult would it be for a n00b to make something like this?

Image

The original design was for a pneumatic but I would add an electrode to the schrader et voila, hybrid cartridge. It's basically a tube with a threaded cap, is it something a beginner can achieve in a couple of hours?
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: LeMaudit » Fri May 20, 2011 8:01 am

The short thread can be a bit of a pain, you'll need bottom tap to achieve it. On an economic point of view, I would try to do a thread on the outside for that reason, longer, so I can use a single kind of tap, cheaper.

A couple of hours? That's after you draw the plan and set up the machine and prepare with a lot of sweat the little pieces of metal saw from a long metal bar, right? Could be... you're quite fast usually :D

This would be done entirely on the lathe BTW ;-)
  • 0

User avatar
LeMaudit
Donating Member
Donating Member
 
Posts: 665
Joined: Thu Apr 16, 2009 2:48 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri May 20, 2011 8:09 am

LeMaudit wrote:I would try to do a thread on the outside for that reason, longer, so I can use a single kind of tap, cheaper.


:oops:

what?

You mean reverse the male and female positions, so the endcap is a sort of rimmed collar? I need to do some reading up on threading, I have no idea what you're talking about :)

LeMaudit wrote:Its not cured! NOT CURED! Arrggghhhhh..... :violent1:


Mixing larger quantities of epoxy generates quite a bit of heat, so it's more like "It burns! IT BURNS!" :D
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: LeMaudit » Fri May 20, 2011 8:45 am

I'll try to explain but I'm no expert:
http://en.wikipedia.org/wiki/Tap_and_die
Image

To form a thread with a tap up to the very bottom, you need three kind of taps: Start with a taper, then plug, then bottom.
Now, the cheaper taps are the taper ones.
If you do it the the other way around, you have a thread longer on your drawing, and I feel you could use a cheap tap to form the correct threads on the beginning of the hole.

An alternative could be to make the plug in two parts, so you can thread the hole inside with a simple taper tap, being in two parts the thread is right up to the end and you can make something more compact

It seem more complicated to do but not really. For the two parts plug, you just have to tap the inside of a tube and keep the length where the thread are formed correctly, and the plug is simply the end of the chamber part that you'll slice off after you made the thread all the way with a die :D

Note that the simple way is to buy the three kind of taps of course...

it BURNS!!!! :blob6:
  • 0

Attachments
extern_thread2.jpg
two parts plug
extern_thread2.jpg (6.01 KiB) Viewed 519 times
extern_thread.jpg
external thread
extern_thread.jpg (5.73 KiB) Viewed 519 times
User avatar
LeMaudit
Donating Member
Donating Member
 
Posts: 665
Joined: Thu Apr 16, 2009 2:48 pm
Reputation: 0

Unread postAuthor: LeMaudit » Fri May 20, 2011 9:07 am

Here's an alternative closer to your first solution, that still don't need the 3 kinds of tap
  • 0

Attachments
extern_thread3.jpg
Look Ma', no bottom tap!
extern_thread3.jpg (8.26 KiB) Viewed 508 times
User avatar
LeMaudit
Donating Member
Donating Member
 
Posts: 665
Joined: Thu Apr 16, 2009 2:48 pm
Reputation: 0

Unread postAuthor: velocity3x » Fri May 20, 2011 9:31 am

JSR,
I notice you added epoxy around the schrader in your design. I guess old habits die hard. :P
  • 0

User avatar
velocity3x
Brigadier General
Brigadier General
 
Posts: 827
Joined: Fri Jun 05, 2009 3:09 pm
Location: Yuma, Arizona
Country: United States (us)
Reputation: 7

PreviousNext

Return to Construction Materials/Ammo Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'