When I decided to build my own printer, one thing I wanted was to avoid the polished rods and sliding bushings most printers are made with. They flex and can pass vibrations to the print head. This design uses two ball bearings on each rubber tired wheel. I can stand on the frame and it can be used for light CNC work.
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Look Mom No slide rods
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Guest
Sounds interesting. You should be able to just add pictures as an attachement to the post and then we can click to view full size.
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Grant,
This frame is available through a company called "Open Builds". My frame is based on several models from Open Builds. The controller, extruder, heated bed and hot end were selections I made after deciding on the frame and linear movement methods. As to how fast it will print, I am still learning. There is quite a lot of inertia in the X and Y axis. But the movements are rock solid. I am using an aluminum printing surface, over an aluminum heating plate. They are insulated from the aluminum build plate and carriage. I use a proximity sensor to level the bed automatically.
I think a lot of Open Builds............Take a look.
http://www.openbuilds.com/
This machine has a double carriage and two screws on the Z axis. I explored a single stepper with a belt for the Z axis and found the double motor and screw a very inexpensive alternative to a belt.
My biggest problems so far have been getting everything to stick to a metal bed, and being able to repair STL files I have built. I designed a lamp and cannot get it to print correctly.
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Guest
Looks good! Have you thought about glass on top of the metal? What software are you using for design?
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Here is the Kick Starter page: https://www.kickstarter.com/projects...token=7d9207f0
The funding goal was about $7,000 and in ten days they have received almost $60,000.
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