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Rat Gat


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#21 Cutter

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Posted 19 June 2013 - 03:17 PM

COOL! I want one

#22 bruski

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Posted 20 June 2013 - 12:29 AM

Here is a picture of the printed plastic plate. The layers need sanding to use as a pattern for sand casting. The barrel holes need reaming after cast into aluminum and everything else cleaned up with a fine sand paper.
bruski

 

 

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#23 Cutter

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Posted 20 June 2013 - 02:03 PM

Hey bruski, that 3D printer is amazing.
After 8 hours of machining.
I spent an hour and a half cleaning up chips.

The Rat is already heavier than one Six Shooter.

 

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#24 bruski

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Posted 20 June 2013 - 05:01 PM

The plate took a little over 8 hours to print with no fill inside or it would have taken over 19 hours with 50% fill. I am glad that there is no labor charges involved when it is turned on. I am learning that the only way to sand this PLA type of plastic is to use water and fine sand paper or it either melts, loads up the paper or is still rough in the end.

The plate you made turned out very nice and looks great with the barrels in it.

Your Rat gun looks almost like about a .357 magnum size compared to the .22 next to it. That might be the way to go if we can't find any more .22 lr ammo. At least the center fires can be reloaded again.
bruski

#25 Roller

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Posted 20 June 2013 - 11:30 PM

Don't forget to add shrinkage to the model if you are going to cast from it!

Frank

#26 4171

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Posted 21 June 2013 - 01:53 AM

If you guys build 357 gats I want in!!! I have a lot of 38 brass! :D
Those 3D printers are cool.
Mike

#27 bruski

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Posted 21 June 2013 - 10:20 PM

The printer made the model slightly larger in all directions so cleanup will need to be done after casting.
cutter,
If you want to start a .357 with about six barrels, I would be right behind you also. The only problem that would need to be delt with is the recoil on the bolts would need to be absorbed 100% by something other than the cam follower pins or bearings.
bruski

#28 Cutter

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Posted 24 June 2013 - 11:06 PM

Received the V-Block Barrel clamps today.
All is good in Ratville

 

Putting a edit here, where I ran out of pics... Dave

 

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#29 42rocker

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Posted 16 November 2013 - 01:46 AM

Well Cutter just have to ask how is this going or just getting ready for the next step.

Later 42rocker

#30 Cutter

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Posted 16 November 2013 - 10:28 PM

42 rocker
Going to finish up some other projects before I get back to the Rat.
Maybe next year.
Take care and good luck with your gun

#31 Cutter

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Posted 17 December 2013 - 03:26 PM

Here's an .IGS of the Barrel Plate for anyone interested

Happy Holidays

#32 Cutter

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Posted 06 February 2014 - 05:04 PM

A preliminary sketch for .22 cal. Accles type 80 round magazine
for the Rat Gat

#33 42rocker

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Posted 06 February 2014 - 10:58 PM

Wow, Looking forward to seeing more on that.

Later 42rocker

#34 gbull

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Posted 07 February 2014 - 05:24 AM

Cutter, can't wait to see what you come up with. I've been thinking about the accles for a while. It positively feeds like your drum mag, with a higher capacity. With a cnc, the spiral cuts should be easy. Delrin for the two spiral plates, and the spoked carrier? Victorianshipmodels.com has a nice illustrated cutaway video on one. Thanks for posting your ideas, and the progress. It's been a real inspiration to a lot of us I'm sure.

Gary

#35 Cutter

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Posted 08 February 2014 - 12:17 AM

Thanks Gary,
I'm not sure the Delrin will work with this design, it may be a little flimsy at that thickness.
I might use some acrylic for the prototype.
I couldn't get to the .com you recommended, I would like to see it.
can you post it or email to me ?

Thanks again
Jerry

#36 Cutter

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Posted 14 February 2014 - 12:39 AM

I had a piece of aluminum, so started with the propeller.

#37 42rocker

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Posted 14 February 2014 - 02:08 AM

Nice work. Looks great.

Can't wait to see it all together.

Later 42rocker

#38 gbull

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Posted 14 February 2014 - 04:21 AM

Cutter, I see what you meant. There isn't much left between the slots at the center. Were you able to see those videos? I e-mailed the site addresses to you. Nice work, can't wait to see what comes next.
Gary

#39 Cutter

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Posted 14 February 2014 - 05:16 PM

I got the video Gary, thanks for the information.
Here's a video from a few years back, the RG-G gearing
will work. I still don't like the spring setup

#40 Cutter

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Posted 24 February 2014 - 11:53 PM

Some progress on the Accles .22 prototype.
87 rounds




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