Hi Everyone.
I was absent for a little while because of an issue with the forum--I was getting a message that I was banned, but I really wasn't. And then things were busy at work. In any event, someone (I can't remember who, at this point) requested that I upload STEP files onto Github so they could edit solid models instead of the mesh in the STL files. I've now done that.
I've also incorporated a few changes requested by brendanjerwin. First, I added a fillet to the screw posts on the top. I've tested the strength of the posts on my printer and they're quite strong. But it was easy to add the fillets for more strength, so I've done that. He also asked for the slot on the top motor mounts, where the stepper wires go through the part, to be on the other side. Moving it to the other side allows easier wire routing as it doesn't have to go past the end stops. Instead of moving the slot, I added a second slot. That way you can decide which way you want to route the wires.
RichRap has a photo on his blog: [richrap.blogspot.co.uk]. Search for "Wiring with RUMBA" and you will see a photo from the bottom. This photo shows that his LCD mount attaches to his printer with two screws. I didn't include these screw holes in my design for two reasons. First, I wanted curved surfaces because I thought they looked nicer. And second, I was focused on taking an inexpensive printer and making it a delta without adding too much to the initial price of the Printrbot Simple. That being said, you could probably create a mount that attached the LCD display to the bottom, using the screw posts (especially if you print my new versions that have a fillet to make them much stronger.
I must say, it's really fun to see the progress and what everyone is doing with this design. Thanks for sharing.
I was absent for a little while because of an issue with the forum--I was getting a message that I was banned, but I really wasn't. And then things were busy at work. In any event, someone (I can't remember who, at this point) requested that I upload STEP files onto Github so they could edit solid models instead of the mesh in the STL files. I've now done that.
I've also incorporated a few changes requested by brendanjerwin. First, I added a fillet to the screw posts on the top. I've tested the strength of the posts on my printer and they're quite strong. But it was easy to add the fillets for more strength, so I've done that. He also asked for the slot on the top motor mounts, where the stepper wires go through the part, to be on the other side. Moving it to the other side allows easier wire routing as it doesn't have to go past the end stops. Instead of moving the slot, I added a second slot. That way you can decide which way you want to route the wires.
RichRap has a photo on his blog: [richrap.blogspot.co.uk]. Search for "Wiring with RUMBA" and you will see a photo from the bottom. This photo shows that his LCD mount attaches to his printer with two screws. I didn't include these screw holes in my design for two reasons. First, I wanted curved surfaces because I thought they looked nicer. And second, I was focused on taking an inexpensive printer and making it a delta without adding too much to the initial price of the Printrbot Simple. That being said, you could probably create a mount that attached the LCD display to the bottom, using the screw posts (especially if you print my new versions that have a fillet to make them much stronger.
I must say, it's really fun to see the progress and what everyone is doing with this design. Thanks for sharing.