On Thursday, November 5, 2020 at 9:50:30 AM UTC-6, wrote:
On Wednesday, November 4, 2020 at 12:07:02 PM UTC-5, Peter W. wrote:
You've never done the software? Umm. Be prepared for a learning curve, I've struggled and I'm an engineer who had to take drawing and CAD in school. But for what you want you're probably okay, lots of youtube videos.

I am not so worried about the software. It has to have its roots in some CAD system from some source,
Yes, it's CAD, but the approach is a little different. Where I think of drawing as an additive process, the approach here seems to be start with a larger shape and subtract elements.

I've used tinkercad.com to create a few items. It can get bogged down but it's a great site.

Netfabb is a must have. It fixes any issues with your objects after creation. It's free and helpful. https://service.netfabb.com/