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SpudTech archive

Last post by btrettel « Mon Jul 06, 2026 7:07 pm
Replies: 2
by btrettel » Sat Jul 04, 2026 2:21 pm » in Website Discussion

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Are there any plans to bring back the SpudTech archive? It was useful from time to time.

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I don't know how many people would use it, but I would find it useful. I've been developing a new pneumatic gun simulator. In my old notes for my...

2 Replies

352 Views

Last post by btrettel
Mon Jul 06, 2026 7:07 pm
Does Anyone Keep O-Rings in a Fridge for Long-Term Storage?

Last post by mrfoo « Mon Jul 06, 2026 7:56 am
Replies: 1
by danigomez » Sat Jul 04, 2026 3:38 am » in Off-Topic Hobbies

First post

I was reorganizing my workshop this week and realized I have several boxes of spare O-rings in different sizes. Most of them are nitrile, but I also...

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Having worked in industrial maintenance, certain of our packs of O rings dated back to the 1970s. They were fine.

1 Replies

250 Views

Last post by mrfoo
Mon Jul 06, 2026 7:56 am
Tire Bead Blaster Modification

Last post by hey_allen « Sun Jun 28, 2026 11:24 am
Replies: 3
by treehousedan » Fri Mar 20, 2026 8:06 am » in Pneumatic Cannons

First post

As an arborist needing to get a pilot line over a specific tree limb I have many options but my current addiction is air cannons. When I saw a video...

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Huh, I didn't know Home Depot stocked them as well, but had been eyeing one on Vevor's site that appears to be identical, but around $70.

3 Replies

90836 Views

Last post by hey_allen
Sun Jun 28, 2026 11:24 am
Propane gun build

Last post by jimmy101 « Sat Jun 27, 2026 3:40 pm
Replies: 1
by Mb01 » Sun Jun 21, 2026 7:27 pm » in Combustion Cannons

First post

Before I build I want to see if my calculations are correct. If I start with the 1.5:1 ratio, I will have a 4 inch x 18 inch chamber and a 2 inch by...

Last post

The propane should be 4%, so about 148cc.

Your chamber is 50% bigger than it needs to be. Might as well scale everything so that the fueling is a...

1 Replies

1621 Views

Last post by jimmy101
Sat Jun 27, 2026 3:40 pm
Boyles Law / Burnt Latkes Fuel Metering Calculation

Last post by Ratguy « Wed Jun 24, 2026 2:49 pm

by Ratguy » Wed Jun 24, 2026 2:49 pm » in Combustion Cannons

This is more of an informational post for people who are starting out and are not familiar with Boyles law. I decided to post this because I was...

0 Replies

1410 Views

Last post by Ratguy
Wed Jun 24, 2026 2:49 pm

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