http://moi3d.com/forum/index.php?webtag=MOI&msg=8665.182
try this if u want to (make a backup of original extrude)
i have my extrude on 'e'
e + d - direction (modified so will take only direction - without distance - distance is set on pointclick)

Michael,

RE: 5 : Bool "Cap ends" - True = cap ends, false = leave ends open.

Is there a scripting method to extend cap end options to include single end only.

When extruding closed curves or multiple surfaces, it is commonly desirable that only the projected end be capped, and the base surface be removed.

Forgive me if this question has arisen before. I have done cursory search of the forum before, but was prompted by your recent post.

James
https://www.instagram.com/nodeology/

Hi James,

re:
> Is there a scripting method to extend cap end options to include single end only.

There isn't one directly built into the extrude factory itself but it's possible to make that by extruding with no caps, then using PlanarSrf to build a single cap, transform it by moving it in the extrude direction, then joining the cap with the extrusion.

- Michael

Thanks Michael,

"extruding with no caps, then using PlanarSrf to build a single cap, transform it by moving it in the extrude direction, then joining the cap with the extrusion."

I am familiar with this approach, although the method of extruding with caps on, then selecting & deleting the base face is a generally less awkward.

It is surprising to me that this feature request is not more common, even if the work around is pretty straightforward.

Thanks again,
James
https://www.instagram.com/nodeology/