Build a capable waterjet cutter from a commercial pressure washer.
Sources:
Cutting head - www.accustream.com/waterjet-parts/accustream/a2/a2…
Orifice - www.accustream.com/waterjet-parts/accustream/accus…
Mixing tube (nozzle) - www.accustream.com/waterjet-parts/accustream/accus…
Pressure washer - www.amazon.com/Excell-EPW2123100-Powered-Pressure-…
Pressure washer hose coupling (for brazing into cutting head) - www.amazon.com/gp/product/B01MXW4GG9/ref=oh_aui_se…
eBay CNC milling (eg) - www.ebay.com/itm/USB-CNC-ROUTER-ENGRAVER-ENGRAVING…
Applied Science on Patreon - www.patreon.com/AppliedScience