From 824d0ca7c9182f3e1aa83acce7b50c4c2ded19d6 Mon Sep 17 00:00:00 2001 From: Jake <jake.read@cba.mit.edu> Date: Fri, 10 May 2019 14:12:11 -0400 Subject: [PATCH] try again chart --- README.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/README.md b/README.md index 481297b..6321c46 100644 --- a/README.md +++ b/README.md @@ -11,7 +11,7 @@ With \#2 feeling somewhat unloved ('both overdesigned and underdesigned'), I'm b While aluminum is my go-to for machine design, and is ostensibly possible to mill on a shopbot by a motivated user (see [jens](https://github.com/fellesverkstedet/fabricatable-machines/wiki/Fabricatable-axis)), there is some hesitation to use it. | Material | Young's Modulus (GPA) | Cost for 6mm x 24x24" | Machinability | -| --- | ---: | ---: | +| --- | ---: | ---: | --- | | ABS | 2 | 52 | Not Dimensionally Stable, but OK to Machine | | Nylon 6 | 3 | 130 | Painful | | HDPE | 1 | 23 | Easy | @@ -60,7 +60,7 @@ Because tooth geometry very sensitively affects linear-ness of drive, especially I am curious about a belt-driven rack, similar to [this design](https://gitlab.cba.mit.edu/jakeread/rctgantries/tree/master/n17_linearPinion). !TODO: compare by transmission ratios (abstract from motor) and cost of parts. -!TODO: belt spec for hight (huge) load belts: tooth shear, and stiffnesses. +!TODO: belt spec for hight (huge) load belts: tooth shear, and stiffnesses. #### Motor Torques -- GitLab