Differences

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--- isel_icv4030:milling_pcb_s [2019/07/05 07:41] – formlab
+++ isel_icv4030:milling_pcb_s [2021/06/22 08:07] (current) – [BAD SVG's] formlab
@@ Line 7: / Line 7: @@
 {{:isel_icv4030:eagle_circuit_and_pcb_layout.jpg|}}\\
-Nonsense demo circuit and PCB layout
+Circuit and PCB layout
   * Make circuit and PCB layout in Autodesk Eagle (version 9.4.0)
@@ Line 15: / Line 15: @@
   * Open [[https://tracespace.io/]] to convert the desired Gerber files to SVG vector files.
   * Open the desired .SVG files in Inkscape.
-  * use ''view > display mode > normal / outline'' to analyse the vector image.
+  * use ''view > display mode > normal / outline'' to analyse the vector image.\\ {{:isel_icv4030:inkscape_-_normal_and_outline_view.jpg?400|}}\\ Seeing the image in the outline display mode (right), it becomes apparent that the traces have a width of zero mm.
-{{:isel_icv4030:inkscape_-_normal_and_outline_view.jpg|}}\\
-Seeing the image in the outline display mode (right), it becomes apparent that the traces have a width of zero mm.
   * ''edit > select all'' (''ctrl + a'')
@@ Line 30: / Line 27: @@
   * ''path > break apart''
   * ''path > union''
-  * ''file > save as'' Choose SVG.
+  * ''file > save as'' Choose SVG.\\ {{:isel_icv4030:inkscape_-_proper_outline.jpg?400|}}\\ Now you have a proper outline
-{{:isel_icv4030:inkscape_-_proper_outline.jpg|}}\\
-Now you have a proper outline
   * insert the SVG file in fusion 360
@@ Line 42: / Line 36: @@
+==== Bad SVG's ====
+=== Circles ===
+{{:isel_icv4030:fusion_pcb_06.png?400|}}\\
+When circles are actually 4 arcs they won't be selectable for a bore or drill operation.
+  * Draw 2 construction lines between the 4 points of the bad circle.
+  * Draw a circle to measure the diameter of the bad circle. Note the dimension and cancel the circle.
+  * Delete the arc segments
+  * Draw a the new circle with the measured diameter
+{{:isel_icv4030:fusion_pcb_05.png?400|}}\\ These are proper circles.
+=== Arcs ===
+{{:isel_icv4030:fusion_pcb_07.jpg?400|}}\\
+Some arcs are composed of multiple smaller arcs.
+  * Select all the segments by dragging the selection box from left to right. Only the line elements that are fully inside of the selection box are selected.
+  * Delete them
+  * Add a tangent arc
+==== Engrave toolpath ====
+If traces come close together, the tool will lift, cutting a thinner trace. This allows to set a relatively deep trace over-all to accommodate flex in the PCB substrate.
+  * Select the area in between traces and push it down a small amount. The depth doesn't matter. **This creates a pocket we can use to select the engrave toolpath**.\\ {{:isel_icv4030:fusion_pcb_01.png?400|}}\\
+  * Add an engrave toolpath strategy and select the traces. You don't need to select the holes yet, but **make sure to select a contour line around all the traces**. That way Fusion knows at which side of the lines the tool need to be placed. I tested 0.3mm depth, but 0,2mm or shallower should work better.\\ {{:isel_icv4030:fusion_pcb_02.png?400|}}\\ {{:isel_icv4030:fusion_pcb_03.png?400|}}\\ Here you can see the cut is made on the outside of the traces.
+==== Small holes ====
+{{:isel_icv4030:fusion_pcb_04.jpg?400|}}
+  * Put one of the PCB drills from the Hyrel kit in a 1/8" (3.175mm) collet.
+  * No need to ad these to the tool list in Fusion. Simulate them with a 1mm flat endmill.
+  * Take the CAM profile "PCB-Drill" from CAM Templates > PCB. This plunges the drill straight down. As it does not helix, the hole is the same diameter as the drill.