...And Continues...

In continuation, once again, here is another post about modelling the retractable pen.

I must admit, nothing much seems to have changed.
Last week I made the stupid mistake of modelling many of the pieces using the measure of the diameter instead of the radius, and this week I merely corrected that. (Many of the pieces look the same, just... smaller.) Not much else of the new side of things has yet been modeled.

Though, though, I did manage to get one more part of the pen modeled:

If one thing has to be said about this, it is that there are way too many internal details in a part with such a simple function.

(The Tip Cap: little plastic piece that essentially holds the pen together)

The basic internal and external shape are formed by creating one form, splitting it to shell the bottom and top portions to different wall thicknesses.

 

The internal thread is created by using the Helix command to create the base curve, then sweeping a circle along that to form a solid spiral. Thirds are created by boolean differencing rectangles, then all ends are capped.

This thread 'cutting' device is then positioned within the pen tip form, then boolean differencing it from the internal surface.

The internal ridges in the upper portion of the tip are then created by creating angled rectangles, rounding out an outer concave space with a negative cut from the inside of the upper pen tip, then the whole piece is boolean unioned; top, bottom, and insides.

 

Tah-dah, fancy pen tip... now on to the rest of this pen...

(Oh, on another note.... I found that spring I lost around the time of my last post... it was under the cat...)