Search found 418 matches

by jor2daje
Thu Jul 04, 2013 9:58 am
Forum: Ammo & Parts
Topic: The Offcial Machinist Thread: Revised 01/04/2014
Replies: 1095
Views: 74149

I think for centering work on the lathe and tramming on a mill an analog dial indicator is actually better because it shows movement much more intuitively, you just see which way the needle is spinning you don't think about numbers. I also love not worrying about batteries, I have a great pair of an...
by jor2daje
Fri May 31, 2013 7:07 pm
Forum: Pneumatic Cannons
Topic: quick question; check valve as firing valve
Replies: 4
Views: 612

if you assume the opening is 2" (its most likely a bit bigger) then you have over 3 in^2 of area being acted on, at 70 psi thats over 200 lbs that your bolt or whatever would have to support. Even with enough force the valves are designed to seal with back pressure so it may behave like cammyd32's. ...
by jor2daje
Sat Apr 06, 2013 6:24 pm
Forum: Off-Topic Hobbies
Topic: Going back to college
Replies: 6
Views: 832

Solidworks and Autodesk inventor are both pretty good programs, if you get a .edu email from college then you can download autodesk inventor free for 3 years. For me the best way to practice was just grab a set of calipers and cad up random objects around my room. If theres something you cant figure...
by jor2daje
Tue Feb 14, 2012 6:29 pm
Forum: Off-Topic Hobbies
Topic: circuit question
Replies: 3
Views: 500

I have the battery it is two pined a connector is necessary to go between the battery and camera.
by jor2daje
Tue Feb 14, 2012 3:09 pm
Forum: Off-Topic Hobbies
Topic: circuit question
Replies: 3
Views: 500

circuit question

Hey guys got a quick question that is out of my electrical league so Im asking here. I recently got an old camera which parts are no longer available for and they only come up very rarely on ebay. My problem I do not have the correct power cord, I have the battery and the camera but no cord. The iss...
by jor2daje
Sun Dec 11, 2011 4:57 pm
Forum: Ammo & Parts
Topic: etched rifling
Replies: 9
Views: 3413

JSR could you modify the thread cutting attachment on your lathe to get an incredibly low threads per inch? This could either work for directly boring a rifles or turning grooves into the wax.
by jor2daje
Tue Nov 29, 2011 6:22 pm
Forum: Combustion Cannons
Topic: Which to build? Golf ball, Baseball , Or Soft ball.
Replies: 17
Views: 1270

I would go for golfball because they're the cheapest. Some one did build softball combustion, Ill see if I can find the link, baseball is probably do-able but youll get better speed, penetration and distance from a golfball.

heres the softball combustion
by jor2daje
Sat Nov 19, 2011 5:35 pm
Forum: General How-To & Discussion
Topic: Any one with cad?
Replies: 15
Views: 2313

Well the drawing is to scale right? So you only need one
by jor2daje
Sat Nov 19, 2011 4:38 pm
Forum: General How-To & Discussion
Topic: Any one with cad?
Replies: 15
Views: 2313

im converting right now, how long from end to end?
by jor2daje
Sun Nov 13, 2011 6:36 pm
Forum: Ammo & Parts
Topic: 3D printers/CNC mills
Replies: 169
Views: 13492

just grab this whole mill for less than the price of a conversion

http://www.ebay.com/itm/160677962501?ss ... 1423.l2649
by jor2daje
Sat Nov 12, 2011 4:18 pm
Forum: Ammo & Parts
Topic: 3D printers/CNC mills
Replies: 169
Views: 13492

mill all the mounts haha, I saw someone on youtube, who made cheapish mounts by hand with an easy to machine plastic. Then used the cnc to make nice time consuming aluminum ones.
by jor2daje
Fri Nov 11, 2011 2:15 pm
Forum: Ammo & Parts
Topic: 3D printers/CNC mills
Replies: 169
Views: 13492

That would be awesome you should log your conversion so others (namely me) can learn what to do and what not to. Have you looked at getting sherline mounts but sourcing your own steppers and drivers?
by jor2daje
Fri Nov 11, 2011 1:43 pm
Forum: Ammo & Parts
Topic: 3D printers/CNC mills
Replies: 169
Views: 13492

Do it!! (then add a 3d head)
by jor2daje
Fri Nov 11, 2011 12:09 pm
Forum: Ammo & Parts
Topic: 3D printers/CNC mills
Replies: 169
Views: 13492

ive been looking into this a fair amount and so far the most promising homemade 3d printer is this one http://www.youtube.com/watch?v=IPmP0u1HuUM Im not sure of the exact process that is used but as you can see it achieves some incredible resolution and no support structure of anykind is needed. Tha...
by jor2daje
Fri Nov 11, 2011 1:13 am
Forum: Ammo & Parts
Topic: machined APFSDS projectiles
Replies: 237
Views: 23320

haha thats because lemaudit has been brainwashing you, soon youll be a sherline salesman too.