[TZ250]

Guys, please help me to subtract an area from a large surface. I've imported, then extruded a shape to get a solid. Now, I'd like to remove a ovalized square.

The software changes the color of that area and adds a curve under one of the corners. The part has another feature (hole) to be removed. That was easy and it took just a few seconds.

What am I doing wrong?

TIA!

[craighill]

Pick the solid that you want to keep first, then select the solid you want to remove. Right click. Select ok. Boolean operation should then execute.

[TZ250]

I can't get the area to extrude. That's the problem that I'm having.

[turningman33]

Hello,

I am new to the cadcam software world and I have v21 bobcad. I have been playing with it,b ut there are some pretty remedial(to someone who knows the software)questions I have. Would anyone be willing to help with ofsetting my learning curve?

[turningman33]

First I'm cutting a hex shaped part and I was wondering if there was a way to draw a hex without drawing each individual line. Second, I want to machine that hex leaving stock for a second pass(in x and y axes only), do I simply offset the geometry by my desired second pass amount and then cut all on both?

[Swag]

If you know how to use the scripts, here ia a hex.bas to use

'HexFlat.bas

UnselectAll

R=2.0*25.4
Ask Header="Hexagon by Flats",Output,Cancel=canc,\
"Distance Across Flats"=R

If canc=1 Then
Exit
Endif

R=R/1.732049

I=R*COS(1.0471976)
J=R*SIN(1.0471976)

PointCoordinates X = R, Y = 0, Z = 0
PointCoordinates X = I, Y = J, Z = 0
PointCoordinates X =-I, Y = J, Z = 0
PointCoordinates X =-R, Y = 0, Z = 0
PointCoordinates X =-I, Y =-J, Z = 0
PointCoordinates X = I, Y =-J, Z = 0
Close

LineJoin

ViewAll

Mark

[SBC Cycle]

First I'm cutting a hex shaped part and I was wondering if there was a way to draw a hex without drawing each individual line. Second, I want to machine that hex leaving stock for a second pass(in x and y axes only), do I simply offset the geometry by my desired second pass amount and then cut all on both?

Aside from the excellent script Swap posted, there are other ways. For a hex that measures 1" across the flats, you could draw one line at, say:

X0.5 Y-0.25
X0.5 Y0.25

Now select that little line (if it's not already selected) and go to "Change, Rotate". Set the coordinate rotation to X0 Y0 and the angle around the axis Z to 60 degrees. Check the box for "Make a copy" and make 5 copies. Click OK and you should have 6 unconnected lines.

If they aren't already selected, select each line making sure the direction of the arrows are all going in one direction ( I prefer counter clockwise, no reason ). Now go to your "Special - NC" menu item and click "Close". Nothing will happen, we are just setting up for the final operation.

Finally go to "Change, Trim and Extend, Strings". The software will automatically connect all the unconnected lines and they will be trimmed appropriately.

OR

Just use the script Swag posted