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--- injection_molding [2025/05/24 18:59] – created sundog
+++ injection_molding [2025/08/18 15:39] (current) – adds section on how to insert mold into the yellow injection machine sundog
@@ Line 37: / Line 37: @@
 MLT Studios: 7 Topology Tips Every 3D Artist Should Know: https://www.youtube.com/watch?v=zSLELihVi6I
+===== Making Molds for the Yellow Injector =====
+//We really need a better name for this machine!//
+Preliminary mold characteristics, as measured by Sundog - **these values are still subject to review until such time that this message is removed from this wiki page**.
+----
+Slot height: 100mm
+Slot thickness: 15.1mm
+Slot lip thickness: 6mm
+----
+Maximum mold face height: 90mm
+Minimum combined mold thickness (not including slot portion): 48mm (24mm per mold half)
+----
+Injection nozzle extrusion: 3mm diameter
+Injection nozzle cone: 4.25mm diameter at top, 16.5mm diameter at bottom, 10mm height
+----
+Ejector pegs: 12mm diameter
+Ejector peg spacing: 65mm between centers
+----
+Mold set screws: 9.25mm diameter (uses a 5mm hex key) centered on slot section of the mold assembly, max hole depth 20mm (screw length: 34.5mm)
+----
+===== Mounting Molds in Yellow Injector Machine =====
+**NOTE: This is very tentative and based entirely on Sundog's guesswork. This note will be removed once we have better information.**
+Because of the tapered end of the extrusion nozzle and its position (namely, that it intersects the area for the Slot Portion of the stationary mold half) we need to move the extrusion assembly out of the way when changing the mold.
+**This must be done after the extrusion assembly has had adequate time to cool down or else severe burns can and likely will occur!**
+Sundog thinks the process will look like this:
+  - Extrude any plastic remaining in the hopper, as the hopper will need to be removed for this procedure.
+  - Let the system cool down.
+  - Remove the plastic hopper and the magnetically-attached door the hopper goes through to the extrusion assembly.
+  - There are two 4mm hex drive set screws, one over each of the bearings on the mounting rails. Loosen both.
+  - Push the entire assembly to the left as far as possible in  order to allow the stationary mold half to clear the extrusion nozzle.
+  - Insert the stationary mold half.
+  - Push the entire extrusion assembly back to the right so that it meets the stationary mold half.
+  - Re-tighten the two set screws that you loosened earlier in this procedure.

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