great, thanks for all the input; i wrote a follow up here. I’d like to emphasize that there are 2 different scenarios :
– DIYers with medium/low quality tooling; I estimated this segment as 30% of the audience; well and of course it’s counter part, the normal user base who’d like to do something, have a budget but no idea idea what, how, etc…
– Professionals who have to provide warranty and quality components and need to keep package size small. our smallest shredder/extrusion pack is 75 Kg, 80x60x45 cm, on Euro palette; shipping is around 100 – 200 Euro
then there are different types of motors coming with that scenarios :
– single phase : expensive to control
– 3 phase & inverter, slightly more expensive but more effective and easy to control (auto-reverse, speed,…)
– gas motors
short remarks :
– hardened steel : is hard to process, if you have nominal errors, I’d be screwed
– clamping the blades: i would have love that, seems the biggest improvement regarding durability and stability, right after bigger shafts
– prices: @btmetz: yes, it’s expensive stuff after all; alone the drive part here in Europe is about ~1000 Euro for new components; we have to add not just labor but also fees to keep the shop/machines up and running, also logistic isn’t exactly cheap
I agree with all points, thanks to Eindhoven picking this up.