First of all = Welcome! and Congratulations!
Re: sharpening "Sharpmaker" style
This can be done with all but the biggest khukuris....however there are easier ways to accomplish the sharpening. Allow me to explain:
Your khukuri's edge is not 100% straight - compared to what you would expect from a factory-set edge on a folding knife (such as SpyderCo). So, sharpening in a Sharpmaker is going to be very time consuming - especially the first time - since your blade will also not have a uniform bevel (in either width or angle).
The second problem is the weight and size of the blade. It will be difficult to maintain uniform pressure against the rods (something that's quite easy with a small folding knife).
Even with these 2 things against you, I bet you could still sharpen it ok - others have done it.
That said, there are many other sharpening methods that are much easier to effecuate and maintain.
The first, and probably most widely used here, is to create a small convex bevel. I won't go into that here, but I consider it the #1 choice for any khukuri.
The second, is to "let the tail wag the dog". Instead of a stationary sharpening system with your knife moving.....switch the parts and make the khukuri stationary and your sharpening system moving. The simplest way to explain it is this: hold the khukuri in your left hand, gripping the spine, with the tip pointed away from you....then with the ceramic rod in your right hand, run it along the blade from bolster to tip. If you want to mimic the Sharpmaker system, then angle the khukuri at 25 degrees and keep your rod straight up and down. I prefer to keep the khukuri straight up and down, and angle the sharpening rod to 25 degrees.
Start with an aggressive grit the first time you set the edge - or else you'll be sharpening till the cows come home....lots of steel to remove. Then move to a finer grit.
The benefits of sharpening this way:
1 - you are more prone to "follow the edge" than to try to set a "factory-straight" edge - which can be very frustrating.
2 - you will get more pleasure from working the edge by hand and will soon be able to sharpen it with anything, anywhere. (stick around a while to hear the stories 'round here)
3 - you will be honoring your khukuri's handmade nature by sharpening it the same way it was made.
4 - you will start asking about how to set a convex edge....
(but you will have already done it slightly by sharpening freehand)
Whichever way you choose - we won't hold it against you.
You asked - I gave you my 0.02
, again IMO.
The Lansky does a decent job but I do have problems with the re-curve part of the blade. It does a much better job than I could do by hand with my diamond rod.