Questions tagged [coil-spring]

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Are recoil operated crossbows/ballistae feasible?

This question is specifically about stationary or vehicle mounted crossbows, not man-portable ones The projectile size would measure about 1.8 - 2 meters in length, so the crossbow would have ...
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1answer
45 views

Help with linear rod drill press like design/materials

I am putting together a basic machine for “pad printing” extremely small and precise parts. The design is very much the same as most homemade drill presses and consists of linear rods, flanged ...
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1answer
27 views

Overextending and cutting a coil spring

This is related to my recent question Can I weaken a coil spring consisting of spring steel?. The answer here could create an additional answer there, but I do not expect that. The difference to that ...
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1answer
39 views

How to build an Adjustable Tension Spring?

Is there such a thing as an off-the-shelf adjustable tension spring? I've searched extensively without success. The problem I'm trying to solve is as follows: I have a tension spring hanging from a ...
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1answer
40 views

What's the name of a device to simulate an object jumping in the air?

I want to make a film of a puppet jumping in the air into the water of a lagoon. I am looking for a pad with a spring release timer that I can bury in the sand so it's out of sight from the camera, ...
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0answers
42 views

How to calculate how much compression is needed for a spring to buckle

First off; School was many years ago and I know little of the mathematics behind all the physics and engineering stuff. So if you have an answer, please explain it like I'm 5? The goal: I aim to be ...
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1answer
145 views

Looking for a compression spring alternative with 10x lifespan

I'm working on a project where 100k spring cycles is gonna last a few months Any recommendations on an alternative? I considered magnets but their sprigabilty isn't great (also, will they get ...
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2answers
25 views

Sizing a spring

I am attempting to 3D print my own Quad lock mount and require a spring. I've taken some measurements but don't know how to search for where I can buy more springs. Dimensions: 12mm height, 20mm OD. ...