More recently, as I looked for ways to reduce manufacturing and inventory costs for ScopeRoller several years ago, she saw a way to simplify the design so that four basic components covered 95% of the product line.
I have been working on a ScopeRoller product to provide mobility for Dobsonian telescopes like this:
I have been working on a design that conforms to ScopeRoller's current product line strengths: don't change the telescope's "footprint"; compact and light enough to ship in Priority Mail boxes worldwide; use of off-the-shelf raw materials (no specialized, custom parts); no new skills required (like welding). I was fighting a losing battle around getting the holes and slots in three separate sheets of aluminum to align. She suggested an alternative strategy which requires aligning holes in two sheets at a time: A bolts to B; B bolts to C. In nerd terms, B is an interface between A and C. Another benefit is that instead of cutting slots in aluminum plate (which is very slow on the Sherline mill), I can solve the problem of how to get a 1/4"-20 bolt to screw into a threaded hole holding B and C together by using a 3/8" through hole. This allows for a few hundredths of an inch misalignment while still locking down tightly with washer