adding video

README.md

@@ -5,16 +5,15 @@ Parametric, low-complexity fabrication linear axis designs using ubiquitous hard
 ## Gantry for NEMA23 Motor, 1/4" Aluminum
 
 ![RCTN23-025ALU](images/RCTN23-025ALU.png)
+![pic](images/RCTN23-025ALU.jpg)
 
 [RCTN23-025ALU Fusion CAD File](cad/RCTN23-025ALU_v49.f3d)
 
- - kinematic mounts are three button head cap screws on 20mm grid w/ reciprocal / wherever-u-like mount ins 
- - all axis have scroll-along top plate w/ connection to motor plate, final scroll kinematic triangle 
- - all axis have scroll-along bottom beam plate w/ 20mm grid w/ last scroll kinematic triangles 
-
-### BOM
+<video width="900" height="505" controls autoplay>
+  <source src="video/SEQ-fusion-parametric-enc.mp4">
+</video>
 
-### Hardware 
+### N23 / 0.25" ALU Hardware 
 
 Type | Size | QTY | Where Used | McMaster PN
 --- | --- | --- | --- | --- 
@@ -22,15 +21,29 @@ SHCS | M3 | 2.5mm Hex | 91292A110
 SHCS | M4 | 3mm Hex | 91292A116 
 SHCS | M5 | 4mm Hex | 91292A124 
 
-Type | Meaning
---- | --- 
-SHCS | Socket Head Cap Screw: machine screws with hex heads in a 'socket' - i.e. the head is the socket, not the driver. 
-FHCS | Flat Head Cap Screw: similar to SHCS but have triangular heads, used when making fastener surfaces flush.
-BHCS | Button Head Cap Screw: rounded head socket heads !
-PLSTCF | Plastic Thread-Forming Screws: have triangular lobed threads and torx drive caps, wonderful in plastics as the beefy threads mean no inserts required. 
+### N23 / 0.25" ALU Tools 
+
+Tool | Where Used | McMaster PN or Link
+--- | --- | ---
+M3 Tap | Extensively | 
 
 ## 90 Degree Block for 1/4" Aluminum 
 
 ![RCTBLK-90-025ALU](images/RCTBLK-90-025ALU.png)
 
 [RCTBLK-90-025ALU Fusion CAD File](cad/RCTBLK-90-025ALU_v6.f3d)
+
+# REF
+
+Find [Open Assemblies Hardware Reference](https://github.com/jakeread/openassemblies/blob/master/hardware.md) for shorthands etc. 
+
+# Jake's Notes
+
+ - doc
+  - bom
+  - hardware callout drawing (probably more useful than video)
+
+ - nice to include a note on what those flexures are up to ... and some other design decisions 
+ - kinematic mounts are three button head cap screws on 20mm grid w/ reciprocal / wherever-u-like mount ins 
+ - all axis have scroll-along top plate w/ connection to motor plate, final scroll kinematic triangle 
+ - all axis have scroll-along bottom beam plate w/ 20mm grid w/ last scroll kinematic triangles 
\ No newline at end of file