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#335494 Modification and Paintjob Pictures

Posted by roboman on 16 November 2013 - 11:42 PM in Modifications

PCB layout for the select-fire Rapidstrike controller I'm working on. (I suppose this would be considered a mod)

Top:
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Bottom:
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Note that these are just the prototype versions. On the final ones, the silkscreening will look a lot better, since that's not really very readable. The first three boards have been ordered, and will be showing up sometime in the next 2-3 weeks or so. The boards are .64"x1.02", and can be tucked away pretty much anywhere in the shell. This style will require some soldering, but i'm working on a version that shouldn't, though it will have to be slightly larger to accommodate the connectors. I'm going to be soldering everything in a reflow oven, since it's all surface mount, which should let me produce these pretty quickly. This version will likely be around $20 with free shipping, while the no-solder one will be about $25 + shipping, because the connectors are both expensive and increase the thickness of the packaging. The boards will be that shade of purple, and all contacts will be gold-plated.



#316726 Modification and Paintjob Pictures

Posted by roboman on 08 June 2012 - 05:59 PM in Modifications

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Pretty sure I haven't posted this here. It's a singled 2K with an aluminum tank and functional suppressor.

http://roboman.comoj.com/2K%20silencer.mp3
That's an audio file of two shots - first is without the suppressor, second is with it.

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The top is suppressed, bottom is not.



#311571 Modification and Paintjob Pictures

Posted by roboman on 21 February 2012 - 02:46 AM in Modifications

(Finally) finished a 2K overhaul, complete with aluminum tank, for NerfNoob10.

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It has the works - aluminum tank, coupler, speedloader, and pump head. I've taken it to 12 pumps so far and the tank has held up fine. It seems to like 7-9 pumps, for some reason. Of course, that means it's ridiculously powerful, too. Haven't had a chance (and won't get one) to test ranges, but it punches through cardboard easily.



#335674 Modification and Paintjob Pictures

Posted by roboman on 27 November 2013 - 10:51 AM in Modifications

The first three rapidstrike control boards arrived.

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As Azrael brought up to me, some of the current-carrying traces are a bit small, and the SOT-23 transistors may not be able to handle the current consumed by the pusher motor. As such, none of these will be sold - they're just prototypes so I can see what's wrong with things.



#324814 Modification and Paintjob Pictures

Posted by roboman on 27 December 2012 - 10:22 PM in Modifications

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Rearloading 2K for Korned. 12" PETG barrels, rearloading, aluminum tank. Shoots hard, even with my foam that doesn't fit well in PETG.



#171756 Modification and Paintjob Pictures

Posted by roboman on 23 August 2008 - 11:59 AM in Modifications

Basic NF AR removal.

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Its airbrushed with Testor's paints.

EDIT: Picture resized.



#331609 Modification and Paintjob Pictures

Posted by roboman on 06 July 2013 - 01:18 AM in Modifications

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I fixed the notorious "black bar." First Maximizer of 4 to receive this treatment.



#331591 Modification and Paintjob Pictures

Posted by roboman on 05 July 2013 - 07:32 PM in Modifications

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Rearloading 2K with transition barrels, an aluminum tank, and a 3D printed turret.



#308821 Modification and Paintjob Pictures

Posted by roboman on 27 December 2011 - 07:12 PM in Modifications

So, my mom gave me an Eliminator for Christmas...

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It looks pretty normal...

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Of course, it's not. I preloaded the spring with some masking tape, so that it's at full compression when it's cocked.

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I also made an aluminum barrel. It has a .485" ID for a nice, tight springer fit. The groove for the O-ring is a few thousandths shallower than the stock one, so the seal is almost perfect.

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The seal is so good that I had to install a piece of .032" music wire to prevent the dart from getting sucked into the plunger.

Ranges are decent, around 45' flat with a good dart. Of course, it can go much farther if you dart-punch with it.

http://www.youtube.com/watch?v=1GO1NUEjAEw
And, of course, the obligatory video.



#302020 Modification and Paintjob Pictures

Posted by roboman on 22 July 2011 - 01:16 AM in Modifications

Just about finished up Lucian's 2K.
It has:
  • Aluminum/PETG speedloader
  • Aluminum Goo Gauge replacement
  • Aluminum pump head
  • Aluminum pump tube shroud
  • Aluminum/delrin female coupler

Paintjob courtesy of Baghead.

Soon, it will be receiving an aluminum valve, as well. He needed this in time for Apoc, though, so it just has a stock tank for now.

8/2/11 EDIT: I shipped him the aluminum tank today, it should be arriving the day before Apoc.

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I'm willing to contract all of this or even just parts of it. PM me for info.



#300844 Modification and Paintjob Pictures

Posted by roboman on 01 July 2011 - 12:09 AM in Modifications

Well, I did two more singled 2Ks, this time as commissions for Baghead.

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The twins.

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I ran out of delrin while doing the second coupler, so I used aluminum. I put a delrin collar around the front to provide some contrast with the metal.

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One of the 2Ks had been previously modded, so it didn't have the plastic collar at the front of the pump housing. Of course, I had to do something about that, so I machined an aluminum replacement.

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The stock plastic hose barb broke off of the pump on this one, so I made a new one out of some 1/4" brass I had laying around.

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Here, you can see the aluminum plates that I used to cover the hole created by the absence of a turret.

If anyone wants one, I'm charging $25 for parts and labor, if you supply the gun itself. If you don't, I'll add on however much a new-ish 2K ends up costing me. PM me here on the 'Haven or talk to me on #nerfchat, if you're interested.



#299771 Modification and Paintjob Pictures

Posted by roboman on 12 June 2011 - 09:22 PM in Modifications

I built this for the leader of my school's robotics team, since he just graduated. He had seen some of my guns before, and he kept telling me all year that he wanted one. This is going to MIT.

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It has an AT2K tank inside. The barrel is a piece of Mcmaster PETG, with a delrin spacer that sandwiches the aluminum plate on the front.

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Front detail.

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The pump handle was done on my lathe, and is made of delrin.

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As you can see, it's basically a singled 2K. There's little to no dead space, so it's quite powerful.



#297224 Modification and Paintjob Pictures

Posted by roboman on 17 April 2011 - 12:32 AM in Modifications

Well, now that NH is back up, I figured I'd post my latest work.

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4 12" aluminum/PETG barrels, rearloading, aluminum pump head.

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Rearloading slot details.

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Singled, custom-turned delrin coupler, 12" aluminum/PETG barrel, will receive an aluminum pump head.

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Male coupler detail.

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Female coupler detail/aluminum plate to cover hole.

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Internals.



#307783 Modification and Paintjob Pictures

Posted by roboman on 25 November 2011 - 07:16 PM in Modifications

Finally finished mysterio's WF turret. It has a Venom spacer and 19 thickwall PETG barrels. I didn't have quite enough PETG to do 20, so I used a piece of Mcmaster aluminum for the 20th. I made an aluminum spacer because half of the center rod snapped off. This is tapped for a 5/16-18 bolt, which holds the spacer and barrels against the back plate.

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Installed.

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Front half.

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Spacer.

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Ugly super glue is ugly.

Also, evidently, I can paint now.

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#303387 Modification and Paintjob Pictures

Posted by roboman on 16 August 2011 - 01:26 AM in Modifications

Decided to give my 2K a little love tonight.

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The gold pattern is a fractal. I did all of the stencils myself in GIMP.

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Close-up.

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The camera flash makes the back end look weird, due to the matte clear coat. It doesn't look that way in normal light.

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Top detail.



#306732 Modification and Paintjob Pictures

Posted by roboman on 30 October 2011 - 09:29 PM in Modifications

A few AT2K parts:
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Aluminum couplers, PETG-Aluminum "transition barrel"

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Male coupler detail.

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Female coupler detail.

I figured this stuff should go here, since it's for an AT2K. If I'm wrong, please let me know.



#306318 Modification and Paintjob Pictures

Posted by roboman on 22 October 2011 - 05:28 PM in Modifications

So, I got a large order of metal last night, and I decided to have a little fun before I started in on the remaining contracts.

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Yes, it's a springer. Yes, I know I've said I hate springers. I don't anymore.

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Virtually zero-deadspace aluminum coupler/bushing combo.

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Male end of the coupler. It has a very good seal.

I haven't improved the stock seal yet, but I replaced the stock spring with an Ace #49. It shoots quite far for a NF.
Also, this NF is going to receive a CNC machined aluminum plunger rod/head. I might start selling kits soon, if there's enough interest.



#336093 Homemades Picture Thread

Posted by roboman on 27 December 2013 - 03:38 AM in Homemades

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5K tanks are finally happening, for those of you who asked for them long, long ago. If you've asked me for one in the past, the price I quoted at the time is still valid. For any new orders, they will be $80 + shipping, because they're looking to be a royal pain in the ass to make.

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That's 3' of 2" diameter round stock. I've got enough 5K tank stock to make far more tanks than have been ordered, but I don't have the time to make all of them before I go back to school.



#334759 Homemades Picture Thread

Posted by roboman on 13 October 2013 - 07:01 PM in Homemades

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Fairly certain I haven't posted this before. Tornadobow priming handle for ACNerfshop from a commission in early July. I don't really intend to make any more of these, other than for the two tornadobows that I'm building for Korned.

http://www.youtube.com/watch?v=g3QpOjrN_TA

Found some video on my phone of the machining process (second operation) and threw it on Youtube earlier today.



#334972 Homemades Picture Thread

Posted by roboman on 24 October 2013 - 09:31 PM in Homemades

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New L+L design for a commission for Psyk.

The catch "block" is entirely 3D printed and makes up a majority of the blaster's structure, replacing all structural standoffs. The grip is a modified version of the design I used for the pumpbows, and is also 3D printed. All flat aluminum parts will either be waterjetted or CNC milled and subsequently sandblasted for a satin finish. The sideplates, catch plate, and catch cover plate are laser cut UHMW or ABS sheet. The top rail is designed to the MIL-1913 standard, and accepts all picatinny rail-compatible accessories.

STLs for those of you who want to try printing the parts yourselves will be up after I build the first one. A number of people have asked if I will be selling these, and I'll consider it if there's enough interest. This is simple enough that I should be able to build them very quickly, and I'd estimate that they'd wind up being around $80 + shipping.



#338206 Homemades Picture Thread

Posted by roboman on 12 April 2014 - 07:59 PM in Homemades

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The printing is going well.



#334384 Homemades Picture Thread

Posted by roboman on 30 September 2013 - 09:57 PM in Homemades

I revised the pump grip CAD for the pumpbows to make it printable without support material, and had Lucian print it for me today. He says it's comfortable.

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Full Album Here



#339853 Homemades Picture Thread

Posted by roboman on 29 June 2014 - 11:26 PM in Homemades

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Just a little bit of aluminum porn for your Sunday night pleasure. This one is for Shoopy (and is, of course, very late), and it includes the new stock rod reinforcements that I came up with to prevent shearing at the connection to the rear plate of the blaster. There's no plunger assembly in it yet because I'm machining the first x-profile o-ring plunger head on the CNC lathe at work tomorrow morning.



#337924 Homemades Picture Thread

Posted by roboman on 31 March 2014 - 04:12 PM in Homemades

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Progress on the new LpLs. I'll edit in pictures of the other two that are bent and ready to go in a bit.



#337499 Homemades Picture Thread

Posted by roboman on 14 March 2014 - 11:22 PM in Homemades

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I updated the LpL model so it's MUCH stronger now. The sideplates are a single piece of bent sheet metal that includes a brace at the front to take most of the load off of the front screws and distribute it more evenly through the plates. The rear block also takes advantage of the pockets in the plates and has a series of bosses that engage the pockets to improve the overall strength of the design. The sideplates are now .063" thick 5052-H32 aluminum, and will be either waterjet or plasma cut, and then bent on a brake.

I added two ribs in the catch pocket to lift the catch plate off of the surface and minimize the sliding friction. That should help reduce the trigger pull.



#336464 Homemades Picture Thread

Posted by roboman on 12 January 2014 - 03:58 PM in Homemades

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Just a little something I threw together in SolidWorks because I'm waiting for the die casting quote for the 2K tanks...

This is an "afterburner" as people have been calling it. It's got the same size flywheels and spacing as a Stryfe, but with 280 sized motors (way more torque). The motors are custom-spec'd at 25,000 RPM and 12V, though I'd like to see about getting even faster ones. The idea is to have something that someone with absolutely no experience can attach to any N-strike blaster that has the quarter-turn muzzle for accessories. It's got a built in battery tray for 4 AA-sized cells (ideally trustfires or something with a ~3V nominal cell voltage).

It's designed to be 3D printed for now, but I'm going to try to take it further and have it manufactured overseas if there's enough interest, since it seems like the kind of thing that could be incredibly useful for HvZ and other wars that only allow stock darts and/or lightly modded blasters. The CAD is mostly complete, and is just missing the channels for routing the wires, a switch mount, and caps for the back ends of the motors. After I build a prototype of it, I'm going to make a different model that's optimized for injection molding and take it to a company that I found that does low-MOQ molding. I'll probably start a Kickstarter for it at that point, since I obviously can't fund it on my own, and I'd like it to reach as broad of an audience as possible.



#336218 Homemades Picture Thread

Posted by roboman on 01 January 2014 - 12:32 AM in Homemades

So I did some stuff in the last few days.

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Started on the first 5K tank. My lathe threw and ruined the back cap when I was working on the last step of it, so I decided to quit for the night and haven't had a chance to work on it since.

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I got to set up a brand new Haas TM-1P today at the community college that I worked at for the past few summers and christened it with a maximizer bar for NoM, since I managed to leave his in my dorm room when I left for break. It still needs to be cleaned up a bit on the wire wheel, but it turned out pretty nice.



#329154 Homemades Picture Thread

Posted by roboman on 28 April 2013 - 10:15 PM in Homemades

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CNC'd out of polycarb. One of two, the second will be black UHMW with translucent fluorescent red highlights.



#324539 Homemades Picture Thread

Posted by roboman on 17 December 2012 - 01:07 PM in Homemades

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Right, forgot to post this.
One of two brithop-style barrels for Hero and Koree. This picture is from before either was polished, so it's not as shiny as the final products actually are. Still, this is the general idea. I do not intend to sell or make any more, since they're quite time-consuming.


EDIT: This is being dumb. Here is a direct link to the image.
Also not working, and I do not know why. It shows up just fine in my photobucket album.



#325004 Homemades Picture Thread

Posted by roboman on 02 January 2013 - 06:44 PM in Homemades

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I guess I never posted this here.
Made it at the start of break. The tank holds about 3 cu. in. of air, and plugs directly into the wye. It's sealed and held in the wye with an O-ring, and the front section of the tank extends all the way to the internal face of the wye, so a bunch of the dead space is removed.

Not selling them yet. My plan is to eventually include a built-in shutoff valve in the hose barb, so when you pull the pin, the air supply is stopped. That makes the tank itself about the simplest possible semi-auto system that doesn't waste air. The current version doesn't have that yet.



#323768 Homemades Picture Thread

Posted by roboman on 20 November 2012 - 03:12 PM in Homemades

Figured I might as well post some of my recent stuff.

Three plunger heads and 2 2K tanks for NerfOMania. The plunger heads allow skirt seals to snap on and seal perfectly without any hardware. They're also solid, so chances are, something else will break long before they do. If anyone is so inclined to purchase one, they're $10 each + shipping.

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#322884 Homemades Picture Thread

Posted by roboman on 21 October 2012 - 10:07 PM in Homemades

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Just a little teaser of a new WIP of mine. Semi-auto, 8 shots, integral 3D printed magazine/breech. The cylinder fires it as it pulls the barrel back. I will NOT be selling these.



#318919 Homemades Picture Thread

Posted by roboman on 20 July 2012 - 10:27 PM in Homemades

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I was busy today.

I suppose you can call these "Rev. 2."
They have a longer barb, so tubing doesn't come off as easily, consistent spring (I was just using what I could find laying around before), and doubled-up O-rings around the pin. They're also polished and waxed.

EDIT: They're multiplying!
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DOUBLE EDIT: Made a 3K tank for Ozymandias.
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#325528 Homemades Picture Thread

Posted by roboman on 20 January 2013 - 06:58 PM in Homemades

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Three small plunger heads with a counterbored hole in the front face to accept a 6-32 pan head screw with an o-ring underneath to seal that hole. Each weighs only 8g, and the hole on the other side is sized to accept 3/8" square rod (.53" diameter, same as the diagonal distance on the square).



#331967 Homemades Picture Thread

Posted by roboman on 15 July 2013 - 06:39 PM in Homemades

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Final revision of the printed 2K turret. Uses a 1/4"-20 bolt as the pin, which provides adjustable spring tension.



#332810 Homemades Picture Thread

Posted by roboman on 09 August 2013 - 12:46 AM in Homemades

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I tried vapor polishing a 2K turret.

I really like the results, and it prevents the o-rings from popping out of the groove.



#332440 Homemades Picture Thread

Posted by roboman on 29 July 2013 - 02:38 AM in Homemades

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30 aluminum pumpbow sideplates. Cut free from the sheets, sanded, drilled, and wire brushed. I'll probably end up polishing them lightly to smooth out the surface a bit more, so you get the textured look of brushed metal without the roughness. The main issue will be removing the polishing compound from the surface, as I found out earlier today when I tried it on one plate. It ended up taking me about half an hour to scrub the rouge off of the plate.

My new wire wheel/buffer is in the background. I highly recommend them for anyone who does a lot of work with metal, since it takes care of deburring for you. That one is currently on sale at Harbor Freight for $40, and the brass wire wheel is another $5. Works great. The buffing wheel lets you have very high-polished surfaces if you use the right compound for the metal you're polishing.



#332359 Homemades Picture Thread

Posted by roboman on 26 July 2013 - 05:21 PM in Homemades

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Finally done with the sideplates. 8 hours of machining remaining for the other parts.



#332252 Homemades Picture Thread

Posted by roboman on 23 July 2013 - 03:15 PM in Homemades

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I printed a bunch of turrets. (Yeah, that's a 3K one on top)



#333060 Homemades Picture Thread

Posted by roboman on 15 August 2013 - 01:03 AM in Homemades

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Pumpbows/plusbows numbers 4, 5, and 6 out of 16.

The two pumpbows pictured are going to my aluminum supplier. One needs two holes to be countersinked, because I seem to have lost my countersink. Korned is receiving the plusbow once I make a priming handle for it.