Bainbridge BARN Mark4
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Greetings form Bainbride Island (just across from Seattle WA, USA). Our MEGA maker space (https://bainbridgebarn.org/) has a project underway to build a mid-size m(350 x350 x400mm) 3D printer that is a riff off of E3D, Jubilee, and a printer one of our locals made. We call it the Mark4. We have a nice machine shop so we're option for a lot of machined parts vs printed plastic so we can run elevated chamber temperatures. We started just before the pandemic started and have been running in fits and starts, but we have a prototype put together that prints on an unheated bed. We've just decided to proceed with the machining of the next big parts, our heated bed and a 575 x 675 x 9mm structural "top plate" that holds the CoreXY structure and Y rails. We implementing a flavor of the E3D tool changer, inspired by the Jubilee version. And we're controlling it all with the Duet2 wifi Duex5 and panelDue.
Big Kudos to the HW and FW designers, and also the Wiki writers. You've made it easy to get the motors and plastic moving in the right direction!
Here's a picture of the proto sitting on it's cabinet. Note the wood proto heated bed (light tan) and the hardboard top plate (dark brown) in the picture. All the Duet3D gear is currently mounted on the back side of the white board at the back, but we're thinking of moving it to a location under the printing zone. Here's a photo:
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Looking good, keep us updated.
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Will do. I'm following some forum accelerometer comments about torsional loads on the crossbar because we've got quite a bit of mass on ours when we use a non-bowden tool. I designed a mechanism to equalize belt tension and we've got our belts on the same plane at the carriage, so we should not have a lot of torsional forces directly from the belts (Y axis). But the mass of the whoel thing is a concern. We're debating the merits of adding mass to tools keep the carriage center of mass on the rail.
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@mikeabuilder said in Bainbridge BARN Mark4:
but we're thinking of moving it to a location under the printing zone
try to install the electronics with good accessibility... it's much easier to make changes or checking some things.
