Max Sievert 561 brass primus blow torch leather pump cup
thingiverse
Super simple, it's just a tube and cylinder, but it will make and form new leather pump cups for your vintage Max Sievert blow torches. It's easy to do, and super quick and easy to print. My Max Sievert is model number 561. I haven't used this on any other model, but the process is exactly the same. I include the actual FreeCAD file, so you can change the diameter if your model is different. I got the leather from an old shoe and the pump works like new, have a look at the YouTube video if you want the details and steps I took to restore the blow torch to working condition. Search for Pixelvalve on YouTube or use the link below https://www.youtube.com/watch?v=xdWYpr-53vk&feature=youtu.be
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