Hi peter, I"m glad that you're getting up to speed and that MoI is being helpful for you!

For the "on surface" snap, if you right-click on the snap for "on surface", that's a built in shortcut which will turn on just that one snap and turn off all the others. Then later on when want to turn them all on right-click on it again.

It is also possible to set up a keyboard shortcut to do it too, for that copy/paste the following script code in as the command part of the shortcut key:

script: /* Switch between only onsrf osnap on or all on */ var snaps = ['objectSnapOrigin', 'objectSnapAxis', 'objectSnapEnd', 'objectSnapMid', 'objectSnapCen', 'objectSnapInt', 'objectSnapQuad', 'objectSnapPt', 'objectSnapOn', 'objectSnapOnSrf', 'objectSnapPerp', 'objectSnapTan', 'objectSnapPerpPerp', 'objectSnapTanTan']; var da = moi.drawingAids; var allon = true; for ( var i = 0; i < snaps.length; ++i ) { if ( !da[snaps[i]] ) allon = false; } for ( var i = 0; i < snaps.length; ++i ) { da[snaps[i]] = !allon; } if ( allon ) da.objectSnapOnSrf = true;

- Michael