derSchraderFlatter QR - quick release tire deflator for Schrader valves

prusaprinters

<p>I recently posted my <a href="https://www.thingiverse.com/thing:3348667">"derSchraderFlatter" Schrader valve deflator</a> - a screw on replacement for a tire valve cap that holds the valve open so the tire can be deflated when needed for service without the need to manually hold it open with a small screwdriver or allen key. (hex wrench)</p> <p>Well, no sooner did I start using it did I realize that even with the reduced amount of threads on that design, it was still too slow to work with, as it had to be threaded on. What about something that would push on and lock in place, and then could be easily removed when the tire was flat?</p> <p>Enter derSchraderFlatter - quick release edition. It's about the same size as the original, but it simply pushes on, at which point the threads on the flexible portion grab onto the threads on the valve, holding it in place. When you're done, press the button on the top, and it'll quickly release and pull off.</p> <p>What is this used for? When I'm working on a bike, there are many things that require the removal of the tire when it's not already flat. Replacing a worn out tire, doing service on the wheel, replacing a wheel, replacing a broken spoke - all of these need the tire to be deflated so it can be removed. I could stand there and hold the valve open until it's completely flat (I've been doing exactly that for years) but having a tool that takes that out of my hands allows me to work on something else while this is happening. I could install this tool and start deflating the tire while I start removing the wheel. A car mechanic could also use this to deflate a car tire, but in that case there's a whole bunch more air volume so removing the valve core is likely a much faster solution.</p> <p>Note: Yes, this could be used for nefarious purposes by jerks.<em>Don't be a jerk.</em></p> <p><strong>Update 20 Jan 2020:</strong> I suck at spelling. It's "Schrader", not "Schraeder". I usually check these things before posting. Oops.</p> <h3>Print instructions</h3><h3>Category: Hand Tools Summary</h3> <p>I recently posted my <a href="https://www.thingiverse.com/thing:3348667">"derSchraderFlatter" Schrader valve deflator</a> - a screw on replacement for a tire valve cap that holds the valve open so the tire can be deflated when needed for service without the need to manually hold it open with a small screwdriver or allen key. (hex wrench)</p> <p>Well, no sooner did I start using it did I realize that even with the reduced amount of threads on that design, it was still too slow to work with, as it had to be threaded on. What about something that would push on and lock in place, and then could be easily removed when the tire was flat?</p> <p>Enter derSchraderFlatter - quick release edition. It's about the same size as the original, but it simply pushes on, at which point the threads on the flexible portion grab onto the threads on the valve, holding it in place. When you're done, press the button on the top, and it'll quickly release and pull off.</p> <p>What is this used for? When I'm working on a bike, there are many things that require the removal of the tire when it's not already flat. Replacing a worn out tire, doing service on the wheel, replacing a wheel, replacing a broken spoke - all of these need the tire to be deflated so it can be removed. I could stand there and hold the valve open until it's completely flat (I've been doing exactly that for years) but having a tool that takes that out of my hands allows me to work on something else while this is happening. I could install this tool and start deflating the tire while I start removing the wheel. A car mechanic could also use this to deflate a car tire, but in that case there's a whole bunch more air volume so removing the valve core is likely a much faster solution.</p> <p>Note: Yes, this could be used for nefarious purposes by jerks.<em>Don't be a jerk.</em></p> <p><strong>Update 20 Jan 2020:</strong> I suck at spelling. It's "Schrader", not "Schraeder". I usually check these things before posting. Oops.</p> <h3> Print Settings</h3> <p><strong>Printer Brand:</strong> Prusa</p> <p><strong>Printer:</strong> i3 MK3</p> <p><strong>Rafts:</strong> No</p> <p><strong>Supports:</strong> No</p> <p><strong>Resolution:</strong> 0.15mm</p> <p><strong>Infill:</strong> 20% grid</p> <p><strong>Filament:</strong> various various various<br/> <strong>Notes:</strong></p> <p>I've printed this in PLA with good results. No reason why it wouldn't work well in other materials. No supports are needed, this relies on your printer being able to do decent bridges over a pretty small distance - in this case only 3.6mm.</p> <p>Print bed adhesion is pretty important, you might find you'll need a brim if it's not perfect, as the flexible part may break off the print bed or shift during printing, which will make it less effective.</p>