K40 Laser Tire Tread Depth Gauge Holder
Description
I created this because my K40 Laser cutter/engraver has a twisted and unlevel axis gantry. I needed a good way to see how far my laser mirror/lens holder was deviating from the base of the machine. I had a tire-tread depth gauge handy so I whipped up this holder. The vertical placement is arbitrary, places about the middle of the probe's travel range. This should allow me to use it with other focal-length lenses in the future. The gauge I own is no longer available on Amazon, but I believe the body is fairly standard and this looks like a good match. https://www.amazon.com/Preciva-Tread-Depth-Gauge-Digital/dp/B074KD2D73 I used these 6x2mm magnets to secure it in place. They are sold as 6mm x 2mm but actually measure 1.75mm thick. They are here: amazon.com/gp/product/B07XRNWZFQ I printed in the orientation shown in the photos with supports to the build plate only, the magnet insets printed fine without supports on my Ender 3 with the cooling fan on high.
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