From 20eecffb130b4dcf1f1956f9f3660f2bc4a35d66 Mon Sep 17 00:00:00 2001
From: Will Langford <will.langford@cba.mit.edu>
Date: Wed, 19 Dec 2018 16:48:39 -0500
Subject: [PATCH] Update README.md

---
 README.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 8be1c6e..f4e49cf 100644
--- a/README.md
+++ b/README.md
@@ -20,10 +20,14 @@ Cutting time: 3.1 min
 
 # EDM
 
-## Full-scale Toolpathing
+### Full-scale Toolpathing
 
 We toolpathed the microspline part at the full ~2" long scale. This would be cut from a stack of six sheets of 0.03125" thick brass layered on top of a 1/16" thick piece of steel. We added slits in the frame to avoid pre-drilling any holes. We also removed all of the tabs. This may prove to be a bad idea but it allows us to get a sense of the speed of Wire-EDM vs uAWG without having to do a lot of pre-processing. The total path length of the full scale toolpath is 52.5 inches. With an expected cut speed of at most 0.22 inches/minute, the expected cut time is approximately 4 hours.  
 
+### 1/3-scale Testing
+
+Given the long machining time, we ultimately decided to do a 1/3-scale test cut from a stack of 0.01" brass sandwiched between 0.25" aluminum. The perimeter of this toolpath measures 17.5 inches. With an expected cut speed of 0.18 inches/minute, the expected cut time is just about 100 minutes or 1 hr 40 mins.
+
 # NC
 
 # [Fablight fiber laser](http://cba.mit.edu/tools/display/?type=tool&id=fablight_3000_laser_cutter)
-- 
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