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 Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades

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Nano Rey'son


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #105 on: Jul 07, 2018, 11:05 PM »
Hello, my name is Sep, and I have a helmet addiction.... But I have a REASON! (after the fact justification).  I've decided to declare a major.  I'm going droid hunter, and I need extra helmet sensors to be BRL compliant, so I need an RF, and there's not a great way to mount one on the current bucket because the earcaps are so thin.  So... without further adieu -- the SepOwl Bucket: (I think I'm done modelling it... printing soon)



Currently rethinking the gauntlets, since I have to reprint them anyway.  They're a hair small, and my priorities for the kit have shifted a bit.  Good news is, the hammer fits with the BRL I am pursuing :)

that looks amazing vod

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Sep Ho'ban


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #106 on: Jul 08, 2018, 02:42 AM »
Thanks!!

Sep Ho'ban


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #107 on: Jul 09, 2018, 10:55 AM »
Iterative rapid prototyping.   

So, I've been printing bits of this helmet pretty much since the last post.  What follows is the process of getting it right:

Front middle section of dome and brow ridge -- original scale:

This one was too snug, and I had concerns about my ears chafing

110% of original scale,  front middle section of dome and brow ridge:

Room for my ears, reasonable visor location (based on how I imagine the top dome slice fitting)

Printed the back section (Also 110%) to check for glasses clearance:

Yup, looks good to go for glasses!

The rest of the pics that follow are with the above 2 pieces -- 110% with the top dome slice also 110% -- I don't have a pic of just the dome and brow, but later pics will confirm the visor consistently sits so I can see

Let the CHEEK BATTLE... BEGIN!!!
So in retrospect, this first cheek print was kind of foolish.  I scaled the cheeks up to 110% (naturally) to fit the dome.  This wound up taking a cheek that I alread knew was bordering on too long and adding a little over an inch to it.   Result:

Holy crap-- way too long! (I mean, like, if I want to look down, like EVER) -- not a shocking result, in retrospect.

Up till now, I'd been doing my scaling in my slicer -- time to go back to fusion.  There, I scaled everything up to 110% (uniform scaling)  my percentages hereafter, are based on that 110%  I made myself a couple of size options with the plan of just printing cheeks until I figured out which size was going to work -- but here's the trick.  The front to back and side to side measurements for the other pieces were already correct.  If I'd used uniform scaling, I would have gotten pieces that were the right height, but too small along x and y to fit the dome.  So I turned off uniform scaling and only made the scaling adjustments to the Z axis -- this is why it pays to model your design in relation to the planes in Fusion 360. 

85% (of 110%)  - Cheek: -- note -- the back ring doesn't get reprinted until I settle on the actual cheek size.  (110% cheek included for comparison)


Better, but still concerned about hitting my shoulders, and one of the things I don't like about my current bucket is that I didn't spend enough time getting THIS part of the fit right, so --

70% (of 110%) - Cheek (85% included for comparison)


Looks like we have a winner, needed to print 70% back ring to confirm

70% Cheek, 70% Back ring with Keyslots:


Winner!   -- Printed the other cheek, but I don't have taped pics of that.

The other thing I had to fix fromt he original is that I modeled in some alignment tabs -- my design didn't work out, and the tabs actually make the inside of the helmet uncomfortable.  So I shaved them off the model, and the front part of the dome and brow, sans tabs is currently printing. After that, I'll reprint the back half and then I can do full mockup.

And now, a comparison of how the design started, and where it ended up:
Orginal Scale


110% dome parts, 70% (of 110%) rest of the bucket



redraynos14


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #108 on: Jul 09, 2018, 10:58 AM »
It's coming around nicely.

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Slade Kel


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #109 on: Jul 13, 2018, 09:32 AM »
Certainly looking good! Seems a little short, but that's probably fine with a good neck seal and balaclava.

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Sep Ho'ban


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #110 on: Jul 13, 2018, 08:20 PM »
It's short because my neck is short and my shoulders (not talking about armor) are tall. In my current helmet when I turn my head I hit collar armor.  Balaclava will cover the gap

Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #111 on: Jul 13, 2018, 10:03 PM »
That was one of the worst parts about printing my buckets. Sizing was always funky. It was either too tall too short or not long enough front to back. Looks good though

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Sep Ho'ban


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Re: Sep Ho'ban - Legacy Kit - WIP (Approved) and Upgrades
« Reply #112 on: Jul 13, 2018, 10:40 PM »
Yeah, I'm actually fortunate here that I don't have a printer big enough to print the whole thing in one piece-- because then I'd have probably printed 4 or 5 full helmets, istead of 3 or 4 extra cheeks and an extra front brow ridge.  Of course, if I DO get a large format printer at some point, hopefully I'll remember this lesson.

Also helps if you're working with your own model, cause you're not stuck trying to just modify an STL, you can modify the source files. 

 


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