So, I have a mesh that I'm done with, however there are too many polygons for what its use is. How can I reduce this? I've used decimate but it's way too destructive. Are there any other options?
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$\begingroup$ please show and if possible share your file or at least a part of it, because I guess the method will depend on your topology: blend-exchange.giantcowfilms.com $\endgroup$– moonbootsMay 20, 2019 at 8:30
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There are some but they'll all require some tweaking. Investigate Decimate further, because there's some angle-limited options in there that are pretty good, and don't destroy the mesh as much, and if you can get it to do it for you then it'll be far less work.
However if you're set on not using Decimate then you may instead have to do it by hand.
Start selecting edge loops you don't need and dissolving them, as well as collapsing verts and edges wherever you think you can get away with it.
If you'd rather start from scratch as it were, you can make a new mesh and shrinkwrap it to your current one using the Shrinkwrap modifier. Extrude sides, add new vertices, etc. This way you can put topology exactly where you need it, and exactly how much of it is necessary and no extra. This process is called Retopology and there's a lot of more detailed information out there available with a bit of searching.
