RP9
RP9
Release status: prototype
Description | Simple cost effective RepStrap
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License | unknown
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Author | |
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CAD Models | |
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Contents
Overview
This RepStrap is an attempt to create a simple cost effective design. The objective is to create a kit that has all the hardware needed for xyz motion. Steppers, electronics , and an extruder can be added to complete the printer
Design Objectives
- 5 ply 6 mm plywood construction
- 8 mm steel shafts for linear motion
- 8 mm LM8UU bearings
- 200 mm x 200 mm x 200 mm build area
- Spectra fishing line drive
- Fabricate mechanical hardware in less than 2 hours
- Completely Open Source
- Minimal part count
Current Status
Progress will be slow due to the need for employment. The development of a router/mill CNC files is in progress. The extruder I bought from ohpakron on Ebay.
Current Part List
A lot of the parts can be purchased. The 8 mm shafts and M6 threaded rod will need to be cut to length. The z axis bearing support is a UHMW part which needs to be machined. The rest of the parts can be easily fit on a 20" x 30" piece of plywood and cut with a CNC router\laser.
Needed Parts For Kit
# | Part Name | Description | Procurement Type | Quantity |
---|---|---|---|---|
1 | Side frame | 6 mm 5 ply plywood | Make | 2 |
2 | Top brace | 6 mm 5 ply plywood | Make | 2 |
3 | Bottom brace | 6 mm 5 ply plywood | Make | 2 |
4 | Table | 6 mm 5 ply plywood | Make | 1 |
5 | Top motor mount | 6 mm 5 ply plywood | Make | 2 |
6 | Bottom motor mount | 6 mm 5 ply plywood | Make | 1 |
7 | Extruder mount | 6 mm 5 ply plywood | Make | 1 |
8 | z bearing support | 25.4 mm x 25.4 mm x 66 mm UHMW | Make | 2 |
9 | linear rail | 8 mm drill rod 300 mm long | Make (cut to length) | 6 |
10 | linear bearing | 8 mm LM8UU | Buy | 8 |
11 | Spectra fishing line | for driving x and y axis | Buy | 1 |
12 | 623VV bearing | bearing for driving y axis | Buy | 1 |
13 | M6 threaded insert | for driving z axis | Buy | 2 |
14 | M6 threaded rod | for driving z axis | Make (cut to length) | 2 |
15 | Coupler | 5 mm x 6 mm coupler for driving z axis | Buy | 2 |
16 | Hardware | To be determined | Buy | + |
Additional Parts Needed
- Electronics (power supply,stepper drivers, control board, etc)
- Stepper motors
- Build platform (glass, aluminum, etc)
- Extruder
- Extrusion material (ABS, PLA, etc)