My next woodworking project will be to make a bunch of frames for artwork I've had sitting around. I got tired of scratching out the right dimensions for things on graph paper, so I did what any good data scientist would do and made a Jupyter notebook to help me repeat calculations. You can download it here or see a preview here.
Then I realized I didn't want to haul my laptop down to the saw-dust coated garage every time, so I should make a web version I can use from my phone. This page is my attempt at doing that.
FYI There may still be some errors in here; hopefully I'll find that out before ruining any nice stock. The graphing at the bottom could also use some work, but I haven't learned much about HTML Canvas elements yet. For that matter, I've never developed anything with mobile in mind before, so that whole "use it on the phone from the shop" thing leaves something to be desired. But hey, at least I'm not scratching this out on graph paper. (As much.)