3D printer... CAD.... DAVER II's DIY MK2 Chassis.

Daver_II

Daver_II

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A couple years ago I was working on a chassis design for a Savage MK2... Started thread about it somewhere here, but decided to start over this week off the success of my 3D printed survival themed Shotgun.

Got a few hours into the design, and the first prototype finished printing today. There are a few issues I will have to address, Material thickness for one, and I will add some aluminum supports to better hold the parts together, ass well as add strength to the screw locations.

The issue with designing your own version of something is the unforeseen stuff that comes up... sometimes it works, and other times not so much.

This is the first print of likely three, so I have lots of time to address the issues.

I integrated a rail up front for bipod attachment, and printed a cover in a more traditional forend is desired.

It will accept standard AR grips, but I will likely tro to design and print my own grip that is a little wider and shorter.

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It is a great hobby to take up. But gets expensive as well.

I would recommend it to anyone as the practical applications are incredible.

Of course you spend half your time designing parts... and fixing or improving stuff around the house.

This chassis will likely cost me $200 by the time I have all the kinks worked out. And many many hours of design and printing. But it is a thing to call my own, and there won't be another one like it... especially to me.
 
Would you be able to print display mounts that go into the magwell I have bought a bunch from Spartan mounts but would buy local better I’m in ottawa and could provide the mags to duplicate:)
 
What program are you using to design? Anyway, very cool. I bet it sures feel good staring at it knowing you made it yourself. I know it would for me.

I got myself a 3D printer during Black Friday and have been messing with some firearm related designs (mainly chassis and a couple accessories). I plan to start printing some prototypes this spring/summer. If all goes well I plan to have my final versions machined through my work. I can't wait.
 
Usually guys will use SolidWorks for things like this. But any solid modelling CAD program can get the job done.

Rhino is the cheapest and I think it does solid models, cant recall because its been a long time since I used it.

I have heard of guys downloading cracked versions of even high end CAD software like Catia and UG, but I would be real careful about that option because they can send emails to the company which report the IP address of un licensed users. Don't ask me how I know.
 
Sometimes cracked software will also have an intentional glitch in it. The original creator will create a detection system to tell if it might be cracked. The pirate can't contact tech support to get it rectified... They're sneaky :).
 
I have a 3d printer but wow kudos to you to print that chassis. Definitely the printing is not the problem is the hours of design and ironing out the kinks, I still have some issues with leveling the bed. It seems that after a few prints starts threading the prints.
 
What size of printer would be required to print such an item? Everything I see online for 3D printers doesn't seem to have a big enough printing bed. Would it cost thousands of dollars for a big enough printer?
Pardon my ignorance I don't know very much about this hobby but am interested in learning.
 
This one is printed in multiple parts. Then connected together with screws (in the future I will run a square aluminum block through the stock for more rigidity.


You can get larger format printers. But it is not strictly necessary.

Remember. Larger prints cost more, take forever, and if there is an error after 30+ hours... are ruined.
 
Daver_II said:
This one is printed in multiple parts. Then connected together with screws (in the future I will run a square aluminum block through the stock for more rigidity.


You can get larger format printers. But it is not strictly necessary.

Remember. Larger prints cost more, take forever, and if there is an error after 30+ hours... are ruined.
Click to expand...

Good to know, thank you.
 
3D printing is not limited to plastics an more. These days they 3D print a variety of metals as well.

The process is kind of interesting as it mixes the metal powder with an adhesive material that bonds the particles until it is baked. The baking process essentially completes the weld and creates the strength. Prior to the baking process the work piece is fragile.

It is not an inexpensive option though, that's for sure.

It's also not solid. The inside is basically a honey comb with a thick outer shell.

For accuracy, with metals, they even have 3D printing inside a CNC milling machine. These systems print a little and machine a little. In the end you get a more accurate work piece with a smooth finish.

Cimatron is a CAD modelling software product that recently separated from the 3D printing division. Now the 2 are separate companies.

It's really only practical for prototypes and very few very specific production applications or emergency situations.

Its a solution that is trying to find a problem. I suggested they send them to war zones, to the moon and to Mars.
 
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