Recent content by guitarpirate

One of the best builds ever, makes one's heart flutter :) I know you are doing it for a friend, but I think you should join Adafruit Google Hangout and show it off on one of those Wednesday nights...

I use Fineline mainly: https://www.protolabs.com/additive-manufacturing For cosmetic parts that come pre-polished with little finishing required, I use Accura Xtreme White material (SLA process), which is their brand name for ABS. This looks awesome (like an injection molded part, almost no 3D...

The helmet is starting to look very nice with that weather or prime layer (I assume you used some kind of brown putty to smooth it out and sanded). Amazing build, the level of detail is very satisfying.

I was just thinking the other day how much work it would take to put this together. Expecting amazing things from this build, it's sure to become legendary! Pretty good amount of interesting detail.

Getting past the middle of the 6 months of sanding/priming to remove laser sintering striations and get the plastic master ready for mold-making. Sitting at about 70 hrs/week since June, with 30/week on this project and the rest on my day job. Some of the "done" parts (the rest are stored at...

If you want something quick and simple, probably go with foam. Lots of examples of that on this forum. This also leaves room for growth if you have the patience, before you are forced to move on to actual model making, 3D printing, CNC machining, and sheet metal fabrication to achieve higher...

Had a presentation today as part of my friend's CAD workshop, will try to post more pics and a video later. From another source:

I loved the entire Seaquest series, although my favorite was with Bridger as the captain. I made numerous models of the submarine none of which survived, and also some attempts at the logo. No costumes.

Can you share what CNC machine you have? It was great to see your method at work since I have no idea what I'm doing and you nailed the right approach to this kind of project immediately. It was very rough for me to come from game development discipline and convert myself into a mechanical...

Would you mind sharing some of your mad styrene skills? I don't think I've seen anything this impressive before. Were they layered, with pieces for each layer cut on CNC, or hand cut? It's especially interesting because the quality is outstanding, but equivalent parts would cost something in the...

Got pistons back from powder coating and clear anodize, and it's a mixed bag as usual. Fig 1. Demonic shimmer The clear-coat anodize looks great on the shafts. I polished them to chrome-mirror finish and the anodize coat diffused it by 15%, which is pretty close to what you see in the...

First experiments in casting. I am grateful for another one of my friends here who suggested using Machinable Wax as the intermediate positive because it is harder and less likely to break or deform on de-mold. Next time I will mask all the thin areas, use less silicone for cost efficiency, use...

Doing piston pre-assembly this week. I came up with something that should work with the help of an engineer here at the hackerspace. Two 16mm grooves on 18mm shaft (1mm deep cut on a lathe with an equilateral triangle cutter), slip O-rings in both, add a bit of oil, and push inside the piston...

Thanks everyone, appreciate it! Pistons are done, waiting for O-rings to come in. Then they are off to get powdercoated and anodized. Also waiting for metal casting stuff to come in, more on that later. Meanwhile... Vibroknuckles! They bring a katana to a melee fight, you give'em this...

Hey, thanks! The only component receiving significant stress is the rotating shoulder connector, but all of the critical parts are made of Nylon-12 which has excellent elongation on break (easy to bend, resistant to fracture). The left shoulder connector has a very thin support mount for the...