Creating designs from elements

(William Adams) #1

If one has a design idea one wants to make, usually it can shown / mocked up as a pixel image, and put together using some basic elements.

For example:


All one should need for that is a portion of a U.S. flag, and the Marine Corps seal — fortunately, both are easily sourced on Wikimedia Commons:

(William Adams) #2

Next, one decides upon the size and material, in this case:

Material is 14 3/16 x 10 9/16 x 3/4 pine wood

Enter that into Carbide Create:

Place the image on the background and adjust its placement / scaling as needed:

(William Adams) #3

Then open or import the files — the Marine Corps seal seems to import fine, but the U.S. Flag has issues and is incompleat, so needs to be opened in Inkscape or some other vector editor and flattened out / fixed.

Once one imports the flag file, delete what is not needed, select what is and scale it appropriately:

(William Adams) #4

Since Carbide Create doesn’t do asymmetric scaling, and one can’t define an accurate 1/16" grid, one will need to delete the background rectangle and redraw an approximation of the area needed:

(William Adams) #5

Next use “Import External File” to add the balance of the required graphics:

and drag to an area where they don’t overlap the balance of things:

(William Adams) #6

If need be, plug in a mouse so as to have a scroll wheel which will allow one to zoom in — do so and delete any unnecessary elements:

Adjust scaling, position and placement until things line up as desired:

Select and delete the stars which are mostly obscured:

(William Adams) #7

Turn off snap to grid and draw a circle to measure how much the outline should be extended to erase portions of the stars:

(roughly a quarter of an inch)

Delete the circle, select the outline and use “Offset Path” do so once for each star which must be adjusted:

0.25 inches to the outside of the path:

(William Adams) #8

Zoom in and select a star which must be edited and the outline by clicking or dragging to select the former, the control-clicking on the latter (it is important that the star have a solid orange line indicating selection, while the outline should have a dashed appearance indicating it is the key object on top):

and choose Boolean | Boolean Subtraction:

Repeat that for each star which needs to be edited.

(William Adams) #9

Select each star in turn and assign a V Carve toolpath — I would suggest a 90 degree endmill to limit how deeply they are cut.

Then select the seal and assign a V Carve toolpath (having grouped this above would likely make this easier) — a 60 degree endmill should preserve the detail better.

which previews well:

but shows one oddity — the stripes on the globe being carved rather than the surrounding area — this is usually caused by a reversed or overlapping path, in this case, the undeleted star.

(William Adams) #10

File is attached here: (899.9 KB)

Adjusting the toolpaths and setting feeds and speeds and actually cutting it out is left as an exercise for the reader.

(William Adams) #11

Further reading, or notes for comparison: