Olin printer studio


My name is Alex Crease, and I’m one of four students who run the 3D printing space at Olin College of Engineering, where any and all students can learn to use our printers. I’m a member of Olin College’s Class of 2016, majoring in Engineering with Robotics. As a leader of the 3D printing space at Olin, I am always looking for new ways to use the 3D printers and share my ideas with the Olin community and the maker community as a whole.This blog is a way for me to both document and share my 3D printing research; I am developing a 3D printing technique called “co-processing”, which will be defined and refined in my weekly posts. This method will be introduced and developed over the course of my posts, and if you are interested in what I do feel free to contact me!

2 thoughts on “About

  1. Hi Alex I was directed to you as you may be able to help me. I currently have an M3D Printer and long story short I have a Nena17 Greg wade get4 extruder setup. The M3D doesn’t allow modifying the stepper motors per min step rates or filament feed rates and my issue is when I send 50mm command to extrude I actually get 150mm extruded. The gear ratio is the standard 47/9 as the normal Greg wade setup. Can you help me or maybe ots easy for you to redo the right size Gears I need to reduce the feed from 150 to 50mm . I attempted to use the online Gear Generator programs and asked the print community and they directed me to you. Please and thanks for any help.


    1. Hi Joshua, just to clarify, do you need to make a set of gears that would make the feed rate the right size? It sounds like you need to take the current gear ratio (47/9), and reduce it by a factor of 3, so you’ll probably need to design a new set of gears or add on an additional gear set to get that ratio. I.e. the total gear ratio should be 47/3 instead of 47/9. The actual teeth on each gear would have to be some multiple of that (probably 141 and 9, maybe 94 and 6), but given those gear (with the same pitch size, a 141 tooth gear will be three times the size of a 47 tooth gear) sizes, you’d either need to increase the size of the extruder head by a lot, or have some gears with a really fine pitch (which I’m not sure a desktop 3D printer would be able to handle). You could also add on another set of gears coming off of the 47 tooth gear with a 3:1 ratio set, and have the smaller gear on the same shaft as the 47 tooth gear, and then the larger gear driving the filament. This would probably would probably be a lot more reasonable size-wise, but you’d still need to design a new gearbox and it would still be larger than what you have now.


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