Smartrap mini
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Release status: working
| Description | Smartrap mini is a small but strong reprap designed to be really easy to build and maintain.
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Note : we started an indiegogo campaign about this project , to build a batch of it and improve the model : http://www.indiegogo.com/projects/smartrap/x/5311699
Thank you for sharing it if you like it :)
update V0.4.5 : new lm8 holders! the integrated one are really too easy to brake ( due to the printing orientation). Now we have a separated part, but more easy to print and more stable!
all come together.
the plate_Base is smaller . extruder was turned 180 degrees.
- 045 4.png
shorter plate_x, lm8 holders and new screw on Z axis for bed levelling.
The new V0.4 updated. lm8 holders was too low and tight. Now it works great out of the box ( not so much snooze by the way ? :)
a better pic of this version!
and this is the v0.4 in blender! No more plate_X_bottom. there's only 8 printed parts now :) happy.
the new simplified plate_X. in V0.4 it's more integrated and lm8 holder are longer, so it's more straight.
under the cover
integrated direct drive.
and it's printing right! on first test, i'm happy.
customized (no more plate-X_bottom) v0,3 redy to print !
all come together :)
the final v0.3 blender version. now in github.
v0.3 final view from back.
the all kit together, before assembly.
v0.3 assembly tests.
almost all printed parts need (i thought i missed some but only the z coupling missing)
v0.3 printing :)
blender preview of 0.3 : looks better and more simple. Soon updated to that version!
from back
another one
close up
first pic of the final design. v0.1
for infos : old designs..
for infos : this was testing with original aluminium rail. very light and cool. but I couldn't make them work straight enough.
for infos : old desig..
Video of version 0.3 printing. It's a little customized version. I removed the plate_X_bottom. It was straight enough eventually. Now there's only 8 printed parts in this reprap = good!
Vision: The Goal
This is a new design of a RepRap 3D printer. It is modeled after the Printrbot, designed by Brook Drumm, who is one of our best designers in my opinion. I tried to make the design it even simpler. (Maybe Brook would be up for a challenge? :) ) This design is made with mostly printed parts, so it's easy to reproduce. It's also full GPL, which means it's open for anyone to use.
The goal is for the Smartrap assembly to be easy enough for a 12-year-old to complete without complication. When assembling, the education part is very important. By building the Smartrap, the user should learn how each part is working in the system, so that the user will be able to find problems and fix them easily. In other words, the Smartrep will try to reach a wider audience of people who might not be ready to build more complicated models. The main goal is to help spread the word and introduce people into the world of replicative, DIY makers.
Other features in any order of importance are:
Real Reprap: most of the structure should be printed, so it can easily print itself for machines. Only the common base should be bought at special shops (motors, hot end, controller, LM8UU linear bearings, endstops).
Simpler assembly: There should be no need for special tooling, ultra precision cuts, drills or even adjustments. The ultimate goal would be an assembly with no screws, where (almost) everything snaps together in place.
Open source!: Since it is GPL, you can build it, sell it, make a business of it etc. Everything is fine as long as you stay under the GPL licence.
Cheap as possible: Currently working with fishing line, printed bushing(?) (not well working for me now), and less costly electronics (no heat bed, four motors, no fan).
Optionally open to experimentation: I've tried so much configurations. For example, aluminium rails with 608zz, fixed axis with moving hot end, moving axis with fixed hot end .etc. (I should put them all online one day).
Features
Print size : from 150x150x150 to around 250x250x200. The first prototype is 200x200x150.
PLA only : It's a political decision: Even if ABS gives better results , i really don't like the fumes and the ecological impact. PLA , being compostable and asking for only 60 watts alime, is far more interesting to me. ( open to talk of course :)
Layer height : not really tested for now, looks like 0.2 works well.
Printed parts: 8.
Screws : M6 x2 , M3 x 16.
Non Printed parts : 6 smooth rods 8mm , 12 lm8uu, 1 M5 , 2 fishing lines 500mm , 4 nema17 motors, 1 hot-end j-head, 1 controler board , 3 mechanical endstops.
Assembly operations count : not much but not totally clear for now. Even i've already assembled 3 versions, it was still not as smooth as it should be. The main design is now ready, we will focus on details to make assembly life easier. In my point of view, it's all in details like how much place you have to put some screws, how easy is it to setup the fishing line..etc .
Practical Info; Tips and Tricks
Rod Lengths: We have for now 90mm lost on X axis and 70mm lost on Y axis. It's too much , but i'm working on it for version 0.5. So if you want 200x200 you need 290mm rods on X axis and 270mm rods on Y axis.
For Z-Rods, the current recommendation is 250mm.
