Welding glass to Harbor Freight goggles adapter for eclipse viewing

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This is an adapter insert to fit standard 4.25in x 2in welding glass into the plastic housing of cheap Harbor Freight welding goggles to make an eclipse viewer. Harbor Freight sells a sub-$10 2 pack of welding goggles https://www.harborfreight.com/2-piece-welding-goggles-set-35711.html, but they're only shade 10. To safely view the sun requires at least shade 14 https://eclipse.gsfc.nasa.gov/SEhelp/safety.html. The solution to this is to purchase shade 14 glass from any welding supply store. Remove the plastic lenses, or flip-up lens housing and use this adapter to fit the glass to the flexible plastic goggles. The retaining clips are fit using any small wood or plastic screw about 1/2 in long. I use the plastic screws I salvage from old HP inkjet printers, but #4 wood screws would work fine also. In disassembling the HF goggles, you need to pull the black pin out from the top of the lenses. If it breaks on the way out, print the retaining pin as a replacement. I recommend printing in dark plastic to minimize the amount of light transmission through the printed housing. Original design files are hosted at OnShape if you'd like to modify. https://cad.onshape.com/documents/a9b89cc36e89ed034d021fd9/w/ff7428bbdfe6494315137b2d/e/0c865fd65078dbf4ffcb40d8