Hey everyone,
A while ago, I bought an Ormerod 1 and made my first prints with this printer. Now after using this printer, I would like to make some improvements (i.e. the IR positioning sensor and the mounting of the printbed). The problem with these improvements I want to make is that they need a complete redesign of some parts.
After some playing on Ebay, I found a cheap ramps 1.4 kit including arduino mega, ramps 1.4 shield, stepper motor drivers and optical endstops. This made me decide that i want to built my own printer the way I want the printer to be.
Because I have never done this, I think that it would help me a lot if people with more experience can give some advice.
To get a clear picture of what i wanted the printer to be, I made the following list of requirements:
- Closed housing (no moving parts that stick out of the printer)
- Stable construction for all axles
- Cheap build
- Simple build
- Parts widely availiable and easy to get
- Larger Printable volume than the standard 200*200*200
- The least amount of bought parts (with long delivery time)
- Space for all electronics, fillament and (raspberry)server inside.
- Stand-alone and via network printing
- Only connectors on outside: power, ethernet, USB? and HDMI?
- 1.75mm fillament (no technical reason, but just because I have it and there is no reason for changing it.)
- easy changable nozzle (.5mm for fast printing, and .3 for fine printing)
I did some research and the following models caught my attention:
- Darwin
- Simpson
- Kossel
- CoreXY
- RepRap Intro
- CubeX
- M3D
- Makerbot replicator
I think that the CoreXY is the simpelest to make with simple parts, so I think my printer will become something like that, But I want to mix different concepts, and I am still not sure if this will be the final product. (Any suggestions?)
Here are some specs that i want to use. Please comment if you think if i should do things differently or if I miss things.
- housing: wooden plates, connected with printed corner pieces directly holding the precision shafts for slider bearings. (500*500*600 mm)
- 10mm precision shafts for X and Y axis
- 25*35 glass printbed (scanner part) -- no heated bed, because my experience with it is not that great and I think I can do without (I print mostly PLA, and i can prep the bed with aceton for ABS)
- Z-axis lifted on 3*m8 guided by 2 8mm precission shaft -- belt driven by 1 motor.
- Arduino mega 2650, with Ramps 1.4 shield (Marlin software?)
- Optical endstops
- 4 Nema17 motors
- T5 timing belt
- 50W J-head hot-end (I dont see any benefits buying more expensive?)
- Old 150W ATX power supply (might get more if it is not enough)
- Printed parts will all be designed by myself (except for gears maybe?)
- Octopi (I already use it with my current printer, but i want to make it part of the printer this time)
I think that the mechanical parts won't be a problem. The basic elecronics won't be a problem as well, but i have never programmed an Arduino, and i already found out that getting the firmware installed and connecting to the Arduino gave some problems. Any help on this is apreciated!
At this moment I still have to order some parts of my electronics, and design a lot of printable parts. Because of other projects and long delivery time at Ebay, this might get a slow side-project.
The project at this state is not more than a concept, the parts that I bought, were a lucky deal, or parts I need anyway and need to measure for designing.
In not too much time, I will order the J-head hot-end to make a model of the parts. When I have all sizes, I will start making the basic lay-out of the printer.
If desired or requested, I will upload some renders of what the printer/ Parts is/are becoming when I start designing.
As said, I do apreciate every advice from more experienced RepRappers.