Comments sought on new build: A CNC Router for RC Gliders and Planes

[JAZZCNC]

I'm not sure if I should dignify that with a response, but I will for now. Are you referring to the angular resolution I quoted? If so then it really should be obvious to you how I measured that from the photos.

Wasn't referring to any specific area I was saying the whole measuring and graphs etc to the level your quoteing was bollocks because unless you measured and worked from a calibrated reference point with calibrated and accurate measuring devices you couldn't possibly know for sure.!

End of the day the quality of the pie is in the eating so bolt it together and see how it tastes.!! . . . . . Looking at the care taken so far I'd put a small wager on that if just left untouched no epoxy etc it will quite happily cut wood to a very high standard and do it all day long without any grumbles from those bearings.!!

[Jonathan]

Wasn't referring to any specific area I was saying the whole measuring and graphs etc to the level your quoteing was bollocks because unless you measured and worked from a calibrated reference point with calibrated and accurate measuring devices you couldn't possibly know for sure.!

The measurements I was taking were relative, not absolute. That is sufficient for the purpose, if you accept that the flatness of my surface plate as an adequate reference point.

[JAZZCNC]

The measurements I was taking were relative, not absolute. That is sufficient for the purpose, if you accept that the flatness of my surface plate as an adequate reference point.

Unless you could fit the whole machine on the surface plate so have base reference then no I don't.! . . . . . . But to be honest I don't give F@~£ all I know is that for cutting wood then with enough care and attention which has obviously been taken here it will be fine even without epoxy.

He's quite correct that If your machine and Mine for that matter can cut aluminium his will easily cut wood.!!. . . End of discussion.!!

[routercnc]

Hi Neil,

I think in all that energetic exchange no-one picked up your enquiry in post #189. You were asking about getting the rails parallel to each other (in plan view). In building mk3 (WIP) I did something similar to you in fixing the 'primary rail' and using the gantry to help set the other rail before marking, tapping and bolting it down. In addition to that to make sure the first rail was straight I clamped a flat hard plate of steel against the outside of the extrusion (with a bit sticking up) to form a stop to push the side of the rail up to.

It turned out that the secondary rail fitted gently against the edge of the other extrusion so all that time spent cutting the crossmembers carefully etc. and building the squarest bed I could had paid off.

I also design and make RC planes - so balsa, liteply, and ply are the usual materials being cut. Will be watching your build with interest.