1X2 Tallcat
Release status: Working
Description | Elegant Wooden RepStrap
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Contents
Description:
Shoot for the Moon!
The 3ft tall TALLCAT has a vertical build area of 640mm.
This is a Pyramid Repstrap made with all 1-Dimensional 90 degree cuts.
The 1X2 and 1X2 TALLCAT are RepRap class 3D-printers that can be built with access to only a drill-press and hand-saw. The parts for the entire system can be made with one-dimensional tools, straight cuts and common materials.
First Test:
607mm tall single-walled tube(40mm diameter).
Z-Step: 0.30mm
Print Time: 5hr40min
This machine is made by: mrkimrobotics.com
Design:
The TALLCAT turns its biggest weakness, long flexible rods, into a strength by using the flex to triangulate the frame into a pyramidal structure. The rods bend out of the way of the z-bearing blocks as they ascend from the inside of the pyramid to the outside. This makes full end-to-end travel possible even with a highly acute frame.
Improvements:
- Eliminated frame spacers.
- Eliminated 45mm M3 bolts.
- Eliminated 25mm X-motor spacers.
- No more asymmetrical countersinks.
- Lower Table increases active Z-Travel.
- X-Travel increased to 160mm.
- Lighter X-Assembly.
- Simple pinch belt clamp has easy tension adjust and requires no through holes in the belt.
New:
- Vinyl shaft stops
- Dual Pivoting footed vertex allows adjustable bearing block alignment.
Status:
- The Y-Carriage version is working.
- The stepper-driven conveyor-y-axis is physically sound but the control system is still being developed so it is experimental.
Y-Carriage v3.0:
Version 3.0 has been reduced to a single part.
The v3 y-carriage integrates an adjustable build platform and bearing assembly in a single layer.
This design uses:
(1) board
(4) holes
(4) 3"-5/16" carriage bolts
(8) 608 bearings
(12) 5/16" washers
(16) 5/16" nuts
Belt Clamp:
(2) #6 x 1" wood screws
(2) M4 nuts for spacers
(2) M4 fender washers
Note:
The timing belt now faces outward so the smooth side rides on the pulley.
There are (3) 608 pulleys for the belt mounted on the threaded frame rods.
Y-Carriage v2.0:
This version uses traditional toothed timing belts and a 1x2 only Y-carriage design.
Video: <videoflash type="youtube">_WT4x1lXV2I|320|240</videoflash> <videoflash type="youtube">yagJJwZvnTQ|320|240</videoflash>
Changelog: v2.5.1 26.5mm spacing for 5//16" rail. Dual table supports. Center belt mount.
Scoop Extruder v2.5.3:
Version 2.5.3 experiments with a shorter 58mm body to make the central bore easier to drill.
It is slightly more compact and has a shorter distance after the drive gear.
Parts Y-Conveyor Version:
This is the original set of parts for the conveyor-belt y-axis version. note: The Shortcat thin-profile x-axis requires no countersinks.
Hardware:
Frame:
(4) 36"-5/16"-18 Threaded Rod Zinc
(2) 36"-5/16" round rod
(9) 12"-5/16"-18 threaded rod
Leadscrews:
(2) 36"-5/16"-18 Threaded Rod Zinc
Y-axis rails:
(2) 12"- 5/16" round rod
X-axis rails
(2) 5/16" round rod 350mm length
Misc:
Thingiverse page parts list: http://www.thingiverse.com/thing:7317