So a little background, I have been 3d printing for about 3 years. I first built an I3 aluminum frame from a kit. Then I build a cherry pi delta. When I built the cherry pi delta, I designed a new effector, arms, carriages, partially due to my want and partially due to materials I already had vs what I could not obtain cheaply, etc. The cherry pi turned out great. Next I built a 100% custom I3 from 2020 extrusion. I desiged every part on this machine. I have since sold my delta and aluminum i3, and my custom 2020 i3 is the best so far. I have built a few others, like a small i3, build 6x6x6 for my god son, that was a good project for he and all, all custom.
Now I want to build a corexy. Top contenders for me are Hypercube and FB2020. Don't take the following wrong. The people that designed these machines did an excellent job and I commend them for all their efforts, and sharing with the community. But there are again things I don't like or things, that I would rather change. Some small some large.
I should mention, I do fairly well in Sketchup. But that is about the extent of my 3d modeling skills and I don't have $ for solidworks, autocad stuff like that. Also, I have hand tools, but no metal working tools or experience. So I know some use aluminum exclusively, but for me it is extrusions and plastic parts.
One example, FB2020 seems to use M4x8 screws, well I have about 1000 M5x10 and would rather go that route, but that means I would be modifying all those parts to be a bit thicker and bigger holes, not a biggie right.
Then both the hypercube and fb2020 use cantilevered beds. Now I agree most are dual 12mm rods with a lead screw and at the size and weights of the bed, those 12mm rods will not flex. But to me the design just is bad. I know many others have different opinions. It is like this bike fork, I see this and I say to myself, why would you do that, you are just asking for trouble, yes it may work, but do you really want to do that? You could make it some much stronger by doubling up with the legs of the fork.
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So what I want to do with the bed is use 3 8mm rods, 2 in rear and one center front, and leadscrew between 2 in rear for movement. To me just seems better, like a fork with 2 legs seems better to me :) Has anyone else actually used this Z design successfully in a configuration like this?
Then some have vertical x carriage and others horizontal. For now I am leaning with a horizontal to maximize Z height. Some have motors in and some out. For me I want the motors in, I would like everything in the frame.
One question I have is can the corexy movement function properly using only 2/3 of the width of the cube. Reason being, use 2/3 for bed and the other 1/3 for eletronics,power supply etc, perhap that electronics section being enclosed to look nice. I think as long as the x and y belts have the same length and route, then it should function properly, it should not matter what size the actual frame is, correct?
So how many others have had these same dilema? At first I thought maybe I could compromise and just go with a published design, but my brain refuses to cooperate, it says I MUST modify certain things lol
Now I want to build a corexy. Top contenders for me are Hypercube and FB2020. Don't take the following wrong. The people that designed these machines did an excellent job and I commend them for all their efforts, and sharing with the community. But there are again things I don't like or things, that I would rather change. Some small some large.
I should mention, I do fairly well in Sketchup. But that is about the extent of my 3d modeling skills and I don't have $ for solidworks, autocad stuff like that. Also, I have hand tools, but no metal working tools or experience. So I know some use aluminum exclusively, but for me it is extrusions and plastic parts.
One example, FB2020 seems to use M4x8 screws, well I have about 1000 M5x10 and would rather go that route, but that means I would be modifying all those parts to be a bit thicker and bigger holes, not a biggie right.
Then both the hypercube and fb2020 use cantilevered beds. Now I agree most are dual 12mm rods with a lead screw and at the size and weights of the bed, those 12mm rods will not flex. But to me the design just is bad. I know many others have different opinions. It is like this bike fork, I see this and I say to myself, why would you do that, you are just asking for trouble, yes it may work, but do you really want to do that? You could make it some much stronger by doubling up with the legs of the fork.
So what I want to do with the bed is use 3 8mm rods, 2 in rear and one center front, and leadscrew between 2 in rear for movement. To me just seems better, like a fork with 2 legs seems better to me :) Has anyone else actually used this Z design successfully in a configuration like this?
Then some have vertical x carriage and others horizontal. For now I am leaning with a horizontal to maximize Z height. Some have motors in and some out. For me I want the motors in, I would like everything in the frame.
One question I have is can the corexy movement function properly using only 2/3 of the width of the cube. Reason being, use 2/3 for bed and the other 1/3 for eletronics,power supply etc, perhap that electronics section being enclosed to look nice. I think as long as the x and y belts have the same length and route, then it should function properly, it should not matter what size the actual frame is, correct?
So how many others have had these same dilema? At first I thought maybe I could compromise and just go with a published design, but my brain refuses to cooperate, it says I MUST modify certain things lol