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Automatic "rifled cannon"

Last post by RileyJames « Wed Feb 04, 2026 7:47 am
Replies: 1
by Spuddy_boink » Fri Nov 21, 2025 12:25 am » in Combustion Cannons

First post

So I was looking at potato cannons (I know suprising right!?) And I notices they aren't terribly accurate so I figured hey make it more accurate and...

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Interesting idea, but that sounds like it could get complicated fast. Accuracy gains might be limited, and safety would be a big concern with...

1 Replies

951 Views

Last post by RileyJames
Wed Feb 04, 2026 7:47 am
DIY Automatic Marble Shooter from Recycled Materials

Last post by samlevy0515 « Wed Feb 04, 2026 12:57 am
Replies: 1
by annasmith » Sat Jan 03, 2026 3:13 am » in General Cannon Discussion

First post

I’m planning a DIY project to build an automatic marble shooter using only recycled materials like plastic bottles, PVC pipes, and old springs—no...

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Interesting project! You could try a spring-loaded lever system using tension from cut plastic bottles or rubber bands for force adjustment.
Have you...

1 Replies

159 Views

Last post by samlevy0515
Wed Feb 04, 2026 12:57 am
Powering a Nema 42 Stepper Motor

Last post by willaimwhite « Tue Feb 03, 2026 1:36 am
Replies: 1
by Beau » Mon Jan 26, 2026 9:59 pm » in Off-Topic Hobbies

First post

I plan to buy a NEMA 42 stepper motor and want to drive it with an Arduino. It draws 6 amps. What devices do I need to drive it?

Below are links to...

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Arduino only sends control signals, not power. A NEMA 42 stepper needs a dedicated driver, a high-current power supply, and thick wires to operate...

1 Replies

299 Views

Last post by willaimwhite
Tue Feb 03, 2026 1:36 am
Parts from the parts bin

Last post by farcticox1 « Fri Jan 30, 2026 5:58 pm
Replies: 6
by farcticox1 » Tue Dec 16, 2025 4:11 pm » in BB, Airsoft, and Pellet Guns

First post

Going to make something from these parts, 10mm BBs, single shot or semi auto, I will see what works out.

10mm.jpg

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Santa got me a Flashforge AD5X, it's a whole new level from my Ender 3, self loading, self purging, self leveling, 4 colors.

Printed grips and...

6 Replies

4133 Views

Last post by farcticox1
Fri Jan 30, 2026 5:58 pm
fl(air) gun - mechanically locked pneumatic cartridge for a 26.5mm flare gun

Last post by loraineftw1971 « Sat Jan 24, 2026 7:36 pm
Replies: 22
1

2
by jackssmirkingrevenge » Wed Jan 18, 2023 9:40 am » in Pneumatic Cannons

First post

I thought this deserved a separate thread from the earlier development .

Cartridge with a Polish flare gun from the 1950s based on the Soviet...

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Wow. That is truly amazing. I've got one of these flare guns. Makes me want to experiment now but my skills are very very basic compared to this...
22 Replies

746220 Views

Last post by loraineftw1971
Sat Jan 24, 2026 7:36 pm

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