[Gdeaver]

I do not like Sketchup. But, If you can deal with it, there is scketchucam add in for it. This gives you ramps that are configurable, helical bores, drills and very important tabs and v tabs. It works very well for a extrusion based router doing al. That said our team is going to learn hms express for solid works this summer. To do tabs with this path is less than desirable. For hobby type routers plunges should be avoided. Ramps, helicals, and v tabs are allot easier on the machine and allow higher precision.