Thanks Metallic Thats done the trick Cheers Daz

idk if this will fix it but it did when i had this issue. heres a link to my older thread:

We had a couple of Kaeser screw compressors and they were great. We started with a 25HP and when we needed to add on, put another 25HP in. They were plumbed so the 2nd one would only kick on when pressure got low and the first couldn't keep up. They would also idle when it hit set pressure. Very few issues with them and they lasted many years. Main thing for any compressor is regular service and to make sure they are in a room that they don't get too hot or cold.

You can sort of do this If you right click your graphics area then click the Attributes Panel Button the Atttributes Panel will stay open. I keep it open and postion it in the lower right corner of my screen It does take up some graphics area, but I can deal with it see the attached screen shot Attributes Panel.pdf

The best software, for working with STL files, is a software called Magics RP, from a company in Belgium. It does cost a fair amount of money for a license though. Autodesk has a free utility now, called Mesh Mixer. It does a decent job of repairing STL files. You are probably using too fine a tolerance. The STL tolerance in Mastercam is a "chordal" tolerance. This means it is not so much an "accuracy" tolerance, as it is a 'step across the surface' distance value... Also, if your model is a Solid, of the Machine, then you've got to "de-feature" the model. If you have a 'surface' model, start by stitching that into a Solid body. Then, use the 'Find Features' Function > Set to 'Remove' the feature. Remove any "holes" or other features on the Solid. Get the models down to the most primitive shape possible that you can. You want everything as simple as possible, before you try and convert it to a STL model. You want to try and limit the amount of curved surfaces, as much as possible. When you export the STL model, the tolerance will effect the "curved" shapes the most. For something Round, that is in the Work Envelope of the machine, like a Spindle Nose, you should get very accurate results, using .04 inches (1mm) tolerance. That will give you fairly small facets on the model. If a .040 output tolerance is to fine, try '.100', or even .250 for the STL tolerance. When I say "de-feature", I'm talking about removing anything extra. Get rid of Chamfers and Fillets. Any unnecessary features like T-Slots. All you need to check for a Table Collision, is a rectangular block. The simplest of shapes. 6 sides, and can be represented accurately with 12 triangles. Now, add a center hole, with counterbore. And 100 threaded holes on the table, then output it with a .0005 STL tolerance, and of course it won't work with the CAS limit of 3K triangles... Hey Orvie, Do you happen to know if the 3K (and 10K) limits are "per model", or if they are "total # of triangles" allowed in the simulation? I thought it was a "total limit", shared amongst all the models being used, but I'm not 100% sure...

TURN OFF THE CHECKBOX FOR 'First Coolant Off command shuts Off ALL Coolant Options'. < That checkbox tells Mastercam that "M09" shuts off ALL Coolant.