update 10

docs/assignments/week09.md

@@ -186,6 +186,11 @@ After all this lenghty setup setup setup up, I could see the simulation of the t
 
 *Simulation of the toolpaths the milling machine would run for me, Loes Bogers, 2019*
 
+I fastened the foam using double sided tape, and by screwing some wood strips to the sides. Let's start. 
+
+![](../images/wk09_fastening0.jpg)*Fastening the material, shot by Bea Sandini, 2019*
+
+
 **Issues and solutions**
 
 During the last run of the roughing toolpath, the nut of the machine touched the surface of the foam on the edges, the tool depth was not enough to prevent this. Even though we thought we measured and calculated everything. The cavity ended up being too deep for the milling bit. Ouch! I paused the machine of course but there wasn't much I could do in the middle of a job. So Maud – who was interning at the lab – switched off the machine to prevent burning. We discussed if I could salvage the design, and because it was only doing the very last path, it was worth trying to do the finishing toolpath anyway, even though it hadn't totally finished the roughing. The soft foam would probably be cut away just fine. And it did! I had to export the finishing toolpath separately again, double checked the zeroes of the machine and ran the finishing path. 
@@ -283,6 +288,7 @@ M3,254.689957,48.270596,-6.000000
 
 ```
 
+And here's the shopbot [file](../files/wk09_combinedtoolpath.sbp).
 
 #Lay-up
 
@@ -312,6 +318,7 @@ Vacuum bag: a vacuum bag to store clothing items in
 ![](../images/wk09_layers_EDIT.jpg)*The different layers, Loes Bogers, 2019*
 
 **Cooking up a bio-resin**
+
 Bea and I shared a batch of Bio-resin. The recipe we used was enough for both our single layer composite tests: 
 
 * 48 g of gelatine
@@ -348,12 +355,17 @@ I studied some samples at the lab and talked to Cecilia about the leather moldin
 
 **Massaging the leather**
 
-I spent about an hour massaging the leather with hot water, to form a little bit into the shape, before I put it in a vacuum bag, it helped a lot to cover all the deeper cavities a bit better. Before I was just getting creases and it was hard to control the vacuum. When it was a bit manually preformed this was easier. Can't wait to take it out!
+I spent about an hour massaging the leather with hot water, to form a little bit into the shape, before I put it in a vacuum bag, it helped a lot to cover all the deeper cavities a bit better. Before I was just getting creases and it was hard to control the vacuum. When it was a bit manually preformed this was easier. 
 
 ![](../images/wk09_leathermanual.jpg)*Manually massaging and forming the wet warm leather onto the mold, Loes Bogers, 2019*
 
 ![](../images/wk09_leathervacuum.jpg)*The mold in a vacuum bag, using a cotton canvas as a bleeder, and a ball of yarn as a breather (worked reallly well! Loes Bogers, 2019*
 
+**Faulty vacuum bags?**
+
+I tried two different vacuum bags and vacuumed them about 20 times but they kept releasing their vacuum. Very sad. During the global review I saw someones leather molding process and Anastasia mentioned a frame might help her press the material down around the shape. I thought hey that could help me! I don't have the (machine) time to make the negative half of the mold but cutting the outline of the blobs out of a wooden rectangle is done in a giffy. I baked the Grasshopper shapes again and baked them, then in Rhino I performed the [Meshoutline] command to make an outline of the balls for the negative mold (the ones that have a slight offset). *Clamp clamp clamp clamp.... Boom!* At least the outline will have proper definition now. 
+
+![](../images/wk09_woodmold.jpg)*My improvised mold-addons, Loes Bogers, 2019*
 
 
 **Glossary**

docs/files/wk09_mold_combinedtoolpath.LOG

-Last Not Complete Stopped@Line 26524 |Cut Mode|  Elapsed: 00:39:55  Reps:  1  ConsoleMvSpeed 120.00  FileEndSpeed 119.5    15:15:43  11-21-2019
- File Completed:No  Ln:26524 Max: 255.02, 255.02, 2.00  Min: 0.00, 0.00,- 42.00  Offset:no  Brks=3  TBCs: 172.837, 139.533, -1446.046  Props: 1.000, 1.000, 1.000