niche manufacturing is a very powerful tool. in the later days of the war, Germany disbursed the wartime production to many small/home sites (as did Russia almost from the start).
i am guilty of it with my little varitone plates. i invested a few hundred dollars initially and now all my equipment/blanks are paid for and i enjoy a few residual sales so i can take the g/f out occasionally or pay for a tank of gas now and then making my trips to Odessa (160 miles round trip) a bit easier to bare when i have to go to the clinic.
in fact it is a basic step in Guerrilla warfare. ever see a handmade Montagnard crossbow made out of an automobile spring that shoots a bamboo sliver? horrifyingly deadly to say the least! yeah i read 'Che' a long time ago.
i say go for it but do not get in over your sales potential or cut yourself short. ( a good trick if one can pull it off!). if it breaks wide open then enjoy. good luck.