Search found 25702 matches

by jackssmirkingrevenge
Wed Mar 11, 2020 11:24 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 26
Views: 3472

Re: JSR's workshop chronicles

JSR, could it be an option to apply an abrasive polishing paste between the rough parts and work them back and forth, allowing them to polish themselves in a natural way? Just a thought. It crossed my mind too but it seems targeting the relevant area is the preferred way to go about it. I'm sick wi...
by jackssmirkingrevenge
Tue Mar 10, 2020 8:51 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 26
Views: 3472

Re: JSR's workshop chronicles

First thing to try would be to remove the handwheel parts entirely, reassemble the rest of the slide, adjust the gibs to "close enough but a bit slack" and see if you can slide it smoothly by hand. If it still sticks, your slideways need some serious looking at, if not yo can start looking at the l...
by jackssmirkingrevenge
Mon Mar 09, 2020 8:43 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 26
Views: 3472

Re: JSR's workshop chronicles

At last, it's alive! https://i.imgur.com/SmWzrj1.gifv Did some running in on the lathe, everything seems to be working nicely :D The only thing I'm not happy about is the compound slide. Even with the gib screws loosened it seems to "stick" at some points, the handwheel movement isn't smooth at all....
by jackssmirkingrevenge
Wed Mar 04, 2020 12:20 pm
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1463
Views: 85015

Re: Short question topic

Yes, to a point: https://youtu.be/F9Tpn8rd1Tk It just need a lot of force to operate even with relatively low pressures. You would definitely need some form of strong hammer to set it off. Since I was looking at blowback mechanisms, I did not proceed with it as too much hammer strength would make bl...
by jackssmirkingrevenge
Wed Mar 04, 2020 11:40 am
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1463
Views: 85015

Re: Short question topic

Xamllew wrote:
Tue Mar 03, 2020 4:33 pm
I had a similar idea for a valveless, except using a mechanism like a Quick Disconnect air hose fitting to lock the projectile in place.
Something like that:

Image
by jackssmirkingrevenge
Tue Mar 03, 2020 10:31 am
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1463
Views: 85015

Re: Short question topic

This should almost act like a burst disk in that with such high friction the projectile would require a certain threshold of pressure to get it moving, such as with combustion cannons, where the projectile essentially is the valve. Pretty much, as long as the projectile is properly airtight. Effect...
by jackssmirkingrevenge
Tue Mar 03, 2020 10:27 am
Forum: Pneumatic Cannons
Topic: I found a gatling cannon
Replies: 2
Views: 932

Re: I found a gatling cannon

Very cool find!

Here is a video explaining how he made it:

by jackssmirkingrevenge
Thu Feb 27, 2020 4:52 am
Forum: Hybrid Cannons
Topic: Single pumping hybrid, "Strong Boy"
Replies: 52
Views: 6525

Re: Single pumping hybrid, "Strong Boy"

hectmarr wrote:
Wed Feb 26, 2020 4:44 pm
Here a video of the operation.
Wow, the muzzle velocity is much lower than I expected :o

:lol: :lol: :lol:

Looks great, very inspring! An electro-pneumatic repeater will definitely be on the cards once I get my workshop sorted.
by jackssmirkingrevenge
Thu Feb 27, 2020 4:45 am
Forum: Miniature Guns
Topic: For help!A reverse engineering of ETG
Replies: 4
Views: 1278

Re: For help!A reverse engineering of ETG

I'm afraid I can't help with the translation but here is arguably the best ETG ever posted on this forum: viewtopic.php?p=162698#p162698
by jackssmirkingrevenge
Wed Feb 26, 2020 7:51 am
Forum: Combustion Cannons
Topic: Shooting various materials with my spud gun
Replies: 3
Views: 1448

Re: Shooting various materials with my spud gun

Some good ol' back to basics produce acceleration, love it!
by jackssmirkingrevenge
Wed Feb 26, 2020 7:45 am
Forum: Hybrid Cannons
Topic: Single pumping hybrid, "Strong Boy"
Replies: 52
Views: 6525

Re: Single pumping hybrid, "Strong Boy"

Great idea! This way you are not limited to spherical projectiles... I had tried to make something similar a long time ago where a solenoid pushes a bolt forward simultaneously chambering the projectile while opening a balanced valve but sadly both my materials availability and electronics knowledge...
by jackssmirkingrevenge
Wed Feb 26, 2020 7:30 am
Forum: General How-To & Discussion
Topic: Nerf Launcher Valve/Design Question
Replies: 2
Views: 799

Re: Nerf Launcher Valve/Design Question

Looks like your traditional three-way valve /QEV setup: https://i.imgur.com/JW8LrsI.gif When at rest, the QEV pilot is connected to the main air chamber (filled from a CO2 bottle and presumably going through a regulator to bring the pressure down). When the three-way valve is actuated, the main cham...
by jackssmirkingrevenge
Wed Feb 26, 2020 7:22 am
Forum: Off-Topic Hobbies
Topic: Concrete ballistic shield
Replies: 2
Views: 923

Re: Concrete ballistic shield

That's interesting! Reminds me of the Panzernest: https://i.imgur.com/4piS6Yd.jpg Do you think these concrete spheres could be useful in modern warfare. Perhaps placing them in a densely wooded area to conceal them from air observation. Given the mobile nature of modern warfare, I don't think fixed ...
by jackssmirkingrevenge
Wed Feb 26, 2020 7:05 am
Forum: Miniature Guns
Topic: Spring Air Mini
Replies: 9
Views: 2737

Re: Spring Air Mini

Xamllew wrote:
Mon Feb 24, 2020 7:31 pm
The original post was probably made when you were a child.
🤣🤣🤣

To answer the original question: viewtopic.php?p=82708#p82708
by jackssmirkingrevenge
Fri Feb 21, 2020 8:53 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 26
Views: 3472

JSR's workshop chronicles

A little over a month ago I posted about getting some new tooling in my new abode. I will be chronicling developments in this thread. Not much progress to report so far, between work and settling in to the joys of home ownership I haven't had a lot of spare time, but there has been a steady trickle ...