I Hear you.
Engraving requires gravers and a great deal of time consuming experience. The last failed stroke can ruin the piece.
Repousse is similar in learning but slightly more forgiving. However, the resultant design will not have crisp clean edges. Rather, the edges will be more rolled, almost like a radiused junction of vertical and horizontal surfaces. Also you would need much thinner material.
CNC requires computer, CNC milling machine with liquid coolant, software (some is available online) learning curve, milling cutters. You may be able to find a facility that will accept you design, even just sketches, create CNC file, mill and return to you for final assembly. Also Ag is an expensive material to grind up and attempt to recycle. Is there a “ maker” coop near you?
Casting is a traditional method but wax carving can be tedious and challenging but rewarding. Silicone mounds can be made of them and casting services can make the casting charging for metal and service. Local art centers may offer classes. Even our local library offers design classes and fabrication by 3D printing. The resultant casting requires careful finishing.
Press forming a sheet into a die ( a negative of the design made by a petter maker) using silicone and high pressures is really high speed repousse but offers rapid fabrication of multiples compared to repousse.
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