Base for door-frame installed Ultrasport pullup bar
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Base to increase the surface area of contact for a pull-up / chin-up bar. Useful if normally it slips down when using it
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Indoor Sports
- Licencja
- Creative Commons — Attribution — Share Alike
When using my pullup bar, an Ultrasport 2-way Pull-Up Bar, it constantly slipped down as i was using it, even though i had it expanded by quite a lot. I noticed the rubber that comes with it is quite hard, so I thought of making this model to distribute the pressure exerted by the bar over a larger area, and also have less chance to damage the door frame. It has a small inset to place a soft rubber piece to provide more friction.
Works as a charm. I put some old mousepad rubber in it, and it really makes a difference. Doesn't budge a bit.
I printed it in Carbon Fiber PETG, at 50% infill, and using 3 modifier boxes as inside pillars with 95% infill. Maybe a bit overkill, but wanted to make sure it didn't break. 3MF attached.
You may notice that the central pillar is not entirely in contact with the target surface when 1st placing it. That's because it's designed to provide support once the curved edges have flexed and absorbed a bunch of pressure first. That way the pressure is distributed more evenly. That's the theory at least.
The green piece is optional. It's just a clip to keep the base attached to the bar even when you don't have the bar mounted on the door. It's also very useful when mounting the bar on the doorframe. You can print that in PLA if you want.
I thought of also adding some sawtooth-like pattern to dig into the doorframe. I didn't do it to avoid damaging the doorframe, but if you're interested in something like that, HMU.