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Yeah,
I don't have a 3D printer either, and I do have some concerns about "plastic" solar instruments.
The Mini SHG was assembled from commercial bits and pieces in the junk box and the housing made from 3mm MDF and some 6mm ply.
I'm using Surplus Shed lenses (10 for $5 !!!) (I have some spare if you want to trial them), the Custom slit plate and grating holder which were "spares" for the Spectra-L200. The helical imager focuser was ex eBay.
I think probably all up for parts, say, $600.
It's used with an ED80 stopped down to 60mm.
It's becoming a serious contender against Lunt and Coronado etalon filters which cost thousands $$$$$$.
One of the French guys, Jean-Francois Pittet, with a Bresser 102/1000 telescope and the SolEx achieved this image - no additional processing other than through INTI:
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