Hi guys,
I'm trying to pick up a build I've begun with a large print bed using a CoreXY config.
Anyway, the one thing I'm not 100% confident about is the way I'm thinking about moving the bed vertically. I really would like to know what the best options are out there for this.The whole machine is around 750x750x750mm, so it's quite large. Original thoughts were based on the Vulcanus Max but I wanted to change a few bits and bobs like the bed design. I was considering powering it with a MKS SBASE (have a v1.2 sitting here) but that's up for debate if it's not likely to work well.
Probably the biggest concern I have is that it's quite a large format with an effective printing area of 500x500mm. I've decided to go with a milled aluminium bed (has a flatness of +-0.38mm over 6ft, apparently) which is going to be amazing, but of course the weight is going to hurt - it's about 10kg just for the aluminium. Then there's the rails under it, heat pad, and anything that I print on it. One does not simply print light items with a machine that big. I'm guessing I need to support at least 15kg and this has been built into the bearings and whatnot I've sourced.
Original thoughts were to have three leadscrews mounted at different points, all connected by a common belt, driven by a single stepper (possibly geared down somehow to provide better resolution/torque). Not sure if a short Nema23 could drive that or if my electronics are capable, but I'm willing to buy more bits if I got that wrong.
Anyway, would love to hear peoples' thoughts, experiences and hopefully I'll absorb a bit of knowledge. Thanks.
I'm trying to pick up a build I've begun with a large print bed using a CoreXY config.
Anyway, the one thing I'm not 100% confident about is the way I'm thinking about moving the bed vertically. I really would like to know what the best options are out there for this.The whole machine is around 750x750x750mm, so it's quite large. Original thoughts were based on the Vulcanus Max but I wanted to change a few bits and bobs like the bed design. I was considering powering it with a MKS SBASE (have a v1.2 sitting here) but that's up for debate if it's not likely to work well.
Probably the biggest concern I have is that it's quite a large format with an effective printing area of 500x500mm. I've decided to go with a milled aluminium bed (has a flatness of +-0.38mm over 6ft, apparently) which is going to be amazing, but of course the weight is going to hurt - it's about 10kg just for the aluminium. Then there's the rails under it, heat pad, and anything that I print on it. One does not simply print light items with a machine that big. I'm guessing I need to support at least 15kg and this has been built into the bearings and whatnot I've sourced.
Original thoughts were to have three leadscrews mounted at different points, all connected by a common belt, driven by a single stepper (possibly geared down somehow to provide better resolution/torque). Not sure if a short Nema23 could drive that or if my electronics are capable, but I'm willing to buy more bits if I got that wrong.
Anyway, would love to hear peoples' thoughts, experiences and hopefully I'll absorb a bit of knowledge. Thanks.
