update with n17

README.md

@@ -34,6 +34,31 @@ Make sure to change 'type' to .step, and check the 'save to my computer' box. No
 
 **Alternately,** you can save the changes to a new file and import that model into another Fusion 360 Assembly. 
 
+## Gantry for NEMA17 Motor, 0.25" ALU
+
+![RCTN23-0375HDPE](images/RCTN23-hdpe-img.jpg)
+
+-42.3 mm - ( 6.5 * 2 ) * 1 mm
+
+https://www.vxb.com/20-625ZZ-5x16x5-Metal-5mm-Bore-Miniature-p/kit250.htm
+
+Flat Heads
+ - 20mm for reach-thru on motor runner
+ - ? there are more ?
+
+- holes in plate
+- wj plate
+- wire organizer test, plate feet 
+
+- 3dpnext
+- wj
+- do we have belts, do we have pulleys, order bearings, last mcmaster, admirals, etc, close it out and next up we do software problems 
+
+### Notes from the First Build 
+Increased preload from 0.2 to 0.4mm 
+A few fitting things ... motor mounts get lots more clearance
+Increased sizes for heat-set inserts to make overflow smaller. 
+
 ## Gantry for NEMA23 Motor, 0.375" HDPE
 
 ![RCTN23-0375HDPE](images/RCTN23-hdpe-img.jpg)