stiffness measurements cnc mk3

[routercnc]

Hi Jonathan,

If you look at the last photo in post 19 you can see that I generally use an 18mm piece of chipboard if I need to cut all the way through. The part I cut out in the last photo does actually have a better finish than the parts in the first 2 photos - possibly because it is cut out of a much larger sheet.

If you look at the bed you can see gaps between the profile sections used to make up to bed. The machine is used primarily for cutting wood and in that mode it has a large sacrificial wooden sheet which sits on the bed. This works well for wood machining.
If I end up doing a lot more aluminium I can see that I may need to either add a lot more profile sections to give less gaps, or invest in a large thick aluminium sheet to bolt to the bed, skim it, drill and tap lots of holes.

I'll keep experimenting with F&S as I machine out more upgrade parts, plus try some with a finishing pass.