Differences

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--- formech_1372:formech_1372 [2023/05/10 06:07] – [PS - Polystyrene] formlab
+++ formech_1372:formech_1372 [2024/03/01 01:38] (current) – [Medium Gauge Film] formlab
@@ Line 37: / Line 37: @@
 ==== Tested mould materials include: ====
   * **Plaster**
-    * <color orange>**!**</color> Varnish the surface
+    * <color orange>**!**</color> Apply primer first and then varnish the surface
   * **Wood**
     * <color orange>**!**</color> Vacuum or varnish the surface
@@ Line 50: / Line 50: @@
   * **3D printed parts**
     * <color red>**-**</color> Limited runs
+    * Plastic deforms: infill becomes visible if not enough top layers or walls.
   * ...
@@ Line 186: / Line 187: @@
   * **Bubble moulding**: The table should be lowered. If it's in the up-position, the air can't pass the seals.
+===== Drying sheets with the oven =====
+Use one of the ceramics oven in the metal atelier.\\
+The control cabinet is behind the oven. \\
+{{:formech_1372:oven_metal_atelier_01.jpg?400|}}\\
+Get the key from Peter to be able to power on the oven.\\
+To turn on the oven, insert the key and turn it to the right. Then turn the red knob to the right.\\
+==== Control panel ====
+{{:formech_1372:oven_metal_atelier_02_control_panel.jpg|}}
+  * There are 9 programs
+  * Each program can have multiple segments
+    * Example: segment 1: warm up to 70° in 30 min, segment 2: keep that temperature for 4 hours
+  * Each segment has 2 values: a temperature, and a time
+  - Press 'program' until it goes to program 5
+    - Nothing is on here yet. (This might change in the future)
+    - Press until there's an empty preset
+    - In the future there might be a paper with an explanation of what programs do what. I could have a fixed entry on the list
+  - Segment 1' is blinking. Use the up-down arrows to set a target temperature
+  - Press the --> arrow to go to the time value
+  - Set the time with the up-down arrows
+  - When ready, press the stop / start button to start the oven
+==== Suggested program ====
+  * Segment 1: temp: 70° time: 30 min
+  * Segment 2: temp: 70° time: 4 hours
+  * Segment 3: temp: 0° time: 30 min
 ===== Clamping tips for high gauge sheets =====
   * Apply 80 grit strips of sand paper to the underside of the clamp frame to provide more grip on the sheet. The strips can be held in place with a good quality double sided tape, contact adhesive or preferably a silicone adhesive to take the heat.
@@ Line 227: / Line 263: @@
     * vacuum: manual operation: start-stop technique to avoid holes if there are large cavities
+  * Polypropylene sheet: 1mm
+    * No profile saved
+    * Heaters at 50%
+    * Heating: ±70 sec. Ready when sheet starts pulling flat. Might be ready much earlier too, but these values are the ones we used for testing. The plastic is very stretchy and blew holes in tiny cavities. So maybe better less heat.
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