From 92d1cb74086a43ee155a2ca3ebab8be2a74064f7 Mon Sep 17 00:00:00 2001
From: Maximilian Stiefel <stiefel.maximilian@online.de>
Date: Sun, 18 Jun 2017 15:24:36 +0200
Subject: [PATCH] Modified README.md

---
 README.md                    |   8 ++++++--
 cad/.pcb_holder_lid.scad.swp | Bin 12288 -> 0 bytes
 2 files changed, 6 insertions(+), 2 deletions(-)
 delete mode 100644 cad/.pcb_holder_lid.scad.swp

diff --git a/README.md b/README.md
index a2f4fb4..aa15639 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
-# ecthing
-Design files related to a photo-sensitive layering method etching machine everyone can build to produce prototypes quickly at home or in the lab. 
+# Embedded Etcher
+Design files related to a photo-sensitive layering method etching machine everyone can build to produce prototypes quickly at home or in the lab.
+## Architecture
+The etching machine consists basically out of two parts. The first part is a UV light, which is used to develop a photo-sensitive PCB. Once this has been done. The PCB has to be treated with sodium hydroxide (NaOH) dissolved in water. This removes the UV-sensitive plastic, where it has been tackeled by the light. 
+
+The second part is the actual etching machine, which is designed to be compatible to euro cards (and even bigger ones). The etching machine is either filled with sodium persulfate (Na<sub>2<\sub>S<sub>2<\sub>O<sub>8<\sub>) or iron(III) chloride.  
diff --git a/cad/.pcb_holder_lid.scad.swp b/cad/.pcb_holder_lid.scad.swp
deleted file mode 100644
index 0b58ba483e277548345ce6d2f5e6f2713db1a85f..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 12288
zcmeI2&5ImG7{)7t#!(YvauW})Bgl+9JKa6mB<n{66ITpuAQ(3gLKu6xYqm?fyN2%S
z+1-R79`vgCFDQYC=tVv1LGUCV1idMGP>`Gikw7kasy}9Cd$T4=R#2+hhpz6bu6p|S
z)?3XoHL%Z|I7y3Lo8j2U*dJ$JIQtGQvp@GU7P;#p5}|NoUAg@s5*Y_Pk=wT@YOIL+
z!nLN|T9J%X#S<%#A-7H?V(co5D=!f7YCm%InOmOgTO)7KM;o6f{ZRPb6!&g5n5j1e
z41p<uObzE3_ppOKCr|aqnvc?f{VUUYQ!)e$0YktLFa!(%L%<L)1Pp=yJpnb^#a_o-
z-c`QoQhDB0JC~Q{WC$1nhJYbp2p9r}fFWQA7y^cXAz%m?0{=k*`iFFNH)HSL1M~R(
zzxx0GqX!uqKz(QddI<VrFJqrWA@mBg7rM5Gv0tIDq0gXCArCqW?S`&Bz}QvjH|Qtm
z2k0B<L+Ao@6xs)Ubw6WYLYJYpAOW3&7NJAX9CY<Q#=eK%hTeqUfL?`q(8JI#4aR<k
zeuTb*zJ;zpYtRDZK#xGz?`7;0=v^p)+R)?B0qEo1xCi|X9v?tgpv#cv^B!alL%<L)
z1Pp<HiNGZstZ|94M#IYnymc<+$yj(??+4@kHQ}qEL!0jTe6;0Wz{P5y&bOaNH!5-C
zG;|gE!e+9f3#&)-q_0#Uyw_r$rnuhJYd#XqAL`J&ZkG>&r{-!;&C$UQwH&M0enK~^
z#@!M3xslx0O^y6>tCmHl3(BM^r*J=gfl#Umc3rM;>vH+J9rAdLeSLJ4hHjYhI`&kz
z9my0d^I{3JL-zSL2GYZ$1r23FD&TbL_%ZDRyZ^{dBJIZ82t|zRR)8S_j#wsrIUJ^3
zl>sS?;G)+dZKG_1?S~Q98xDJQOJ#%Hlnq}_<>W;G$ek1|W>I+Am@74zgw<sUWG4JG
zJXDfx!GZDcH*LRlGFE1u=OZ3tb0jHAqfC)dB*(y_DV4*s#zof1Vj<%eSR!?DDZZ{+
z&6oICq^KdMYd4WK;sOVo!yOvCp;(PkZWe)S*70a03sroI&X%G9_kHfu5;kn|<Zt&k
z=?;FUh8qYhcauK+CYjG$Wgv5xlS!o^f~kzhd|jvw_;z4Wt%+2jZ0k9cNR?;!lLg#j
zV$EcJEqAu&3MS5MM5+k93}eL{5Yb2`fSQd)SWWssj!2}i)AiSf1wiam4SCD%+KbxK
zc5mkB${A~L3_H`otD#pgkQ=(RG8u`M<*F>){AETs+ay7K^{Pj`mK0M<SRAVaDHdg2
zRj$RlczY?3$Sn3ZTDN)@k-e>?sW=^TQ{icTn^NH-^Tlw;6CQgUnc>M$Caq}WxIVX;
zb*B&XNY8l+$+iQ1vn=KGj4vV{>vT@@4bjgs5qlwW<|Z|H`vP~p?WVhTnu4V<oG5Ii
zI{{)x3@^J_M<R*&B0N`z@F^m4j&$wA-Jb0n$wQl|KqmVB%yDwEU!G1Y!G}CVQ{8%5
u`1vQKT%u`BsDQAiz51%@k6=n}?2}9Q0;OVrUH4em%2nPiKVRJ)Ab10Rs}&~z