Add all existing measured caps. Render all.

.gitignore

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+*.DS_Store
+

.gitmodules

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+[submodule "scad/common"]
+	path = scad/common
+	url = https://git.sixteenmillimeter.com/modules/common.git

README.md

@@ -1,3 +1,5 @@
-# c_mount_lens_caps
+# c-mount lens caps
 
-Printable front and back caps for common lens sizes for c-mount lenses
+Printable front and back caps for common lens sizes for c-mount lenses.
+
+-----

compile.sh

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+#!/bin/bash
+
+############################
+#
+# Compile all STL files
+#
+############################
+
+while read line; do
+	name=$(echo "${line}" | awk -F',' '{print $1}')
+	if [[ "${name}" == "lens" ]]; then
+		continue;
+	fi
+	diameter=$(echo "${line}" | awk -F',' '{print $2}')
+	height=$(echo "${line}" | awk -F',' '{print $3}')
+	thickness=$(echo "${line}" | awk -F',' '{print $4}')
+	echo "Compiling ${name}..."
+	stl="stl/${name}_front_cap.stl"
+	openscad -o "${stl}" -D "Diameter=${diameter}" -D "Thickness=${thickness}" -D "Height=${height}" scad/front_cap.scad
+	python scad/common/c14n_stl.py "${stl}"
+done < ./lenses.csv
+
+
+README=$(cat ./README.md)

lenses.csv

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+lens,diameter,height,thickness,confirmed
+Pizar_25mm,33.5,5,3,false
+Pizar_26mm,33.5,5,3,false
+Switar_10mm,33.5,5,3,false
+Switar_16mm,33.5,5,3,false
+Switar_25mm,33.5,5,3,false
+Switar_50mm,43.4,5,3,false
+Yvar_16mm,33.5,5,3,false
+Yvar_75mm,33.5,5,3,false
+Yvar_100mm,33.5,5,3,false
+Yvar_150mm,43.5,5,3,false

notes/references.md

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+# References
+
+[Kern Switar Lenses - C-Mount](https://cinematography.com/index.php?/forums/topic/796-kern-switar-lenses-c-mount/&do=findComment&comment=5838)
+
+```
+Kern / Focal Length (mm) / Hood Diameter (mm)
+
+ 
+
+Switar / 10 / 33.5
+
+Yvar / 16 / 33.5
+
+Switar / 16 / 33.5
+
+*Switar / 25 / (Not provided by Surgenor; my RX matches the Switar 16mm RX)
+
+Pizar / 25 / 33.5
+
+Pizar / 26 / 33.5
+
+Macro Switar / 26 / (Not provided)
+
+*Pizar / 50 / (Not provided; my RX matches my Switar AR 75mm)
+
+Switar / 50 / 43.4
+
+Yvar / 75 / 33.5
+
+Macro Switar / 75 / (Not provided)
+
+*Switar AR / 75 / (Not Listed; matches my Pizar RX 50mm)
+
+Yvar / 100 / 33.5
+
+Macro Yvar / 150 / (Not provided)
+
+Yvar / 150 / 43.5
+
+ 
+
+These 33.5mm diameters apparently correspond to the 32mm front thread.
+
+ 
+
+Also, according to Chambless Cine Equipment, the Kern 100 group of zoom lenses, (POE, POE-4, and PTL), have an 85mm front thread.
+```

scad/common

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+Subproject commit 53f4dd4a2d6dd038c1beb97f8ae721ec5905a43b

scad/front_cap.scad

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+include <./common/common.scad>;
+
+Diameter = 33.5;
+Height = 5;
+Thickness = 3;
+$fn = 200;
+
+module front_cap () {
+	difference () {
+		cylinder(r = R(Diameter) + Thickness, h = Height + Thickness);
+		translate([0, 0, Thickness]) cylinder(r = R(Diameter), h = Height + Thickness);
+	}
+}
+
+front_cap();