I've very sorry to hear about your stroke, you have my sympathy, coincidentally my Aunty's husband also had a stroke, before that he used to repair electronics in his spare time, he's still up and able about though. I'm trying to get a gear SLA printed because given that I'm on the other side of the world, my choices are attempt to make a gear or do nothing and wait for the gear to fall apart. I've read that SLA can produce some very high detail and durable prints. I plan on sending a 3D model to a 3D printing outfit. I'll be using Maya (3D program) to make the model, even though it's not CAD, I have a great deal of experience in Maya and hard surface modelling: http://imgur.com/IYSvc00 http://imgur.com/3alTqNi I'm planning on modelling it in 2 pieces and super gluing it together - I'm just hoping I get it right, if I do then I can share the STL file.