Crush

This is Crush. It's what happens if you take Rush, replace nearly every M3 nut with a heatset insert, put a linear rail into it, make it take straight talons, and swap the main grip with the grip from the Lynx.

Build Guide

https://docs.google.com/document/d/1mm_MIWJvARSV73PJ12JFbj3UHJZgTN51yZ4KTzBU-t0/edit?usp=sharing

Where to get a kit / finished blaster

So far, four very good shops have agreed to carry hardware kits, DIY kits (hardware and prints), and completed blasters. They are:

BearsWares: https://bearswares.shop/products/crush-by-chance-industries 

Capital 3D via BearsWares (AUS): https://www.capital3dprinting.com.au/products/crush

FoxFire Industries: https://foxxencreations.com/products/assembled-crush-by-chance-h

3DBlasted Hawaii:

https://www.etsy.com/listing/1783289063/crush-flp-06-rush-remix

Foamdemic:

https://www.etsy.com/listing/1788348567/crush-nerf-blaster-full-build

Every sale pays both myself and Je, the creator of the Rush.

Hardware considerations

The heatsets used are the “Voron-spec” ones - 5mm wide, 4mm deep. The ones I used were from https://www.amazon.com/Printing-M3x4x5mm-Threaded-Embedment-Automotive/dp/B0BTYF2MMD, but many suitable listings exist.

The linear rail is a 150mm MGN9C. I've used both https://www.amazon.com/ReliaBot-Linear-Carriage-Printer-Machine/dp/B09SD9N2Q5 and https://www.fabreeko.com/products/honeybadger-mgn9c-stainless-steel-rails?variant=42106245447935 and found both to be quite smooth. Cheaper linear rails are a bit of a dice roll as to whether you'll get something smooth or crunchy, snug or jiggly. It may be a good idea to wipe down the rails really good to get whatever oils/greases come on it off, and replace with a light oil to ensure low friction.

Licensing

As with everything else I release, this is licensed under CC-BY-NC-SA, which means you're more than welcome to take a copy, modify it to your heart's content, and upload those changes. What you can't do is sell copies of anything from this page or any derivative works (remixes), which must also be marked CC-BY-NC-SA. 

Changelog

8/20/2024: Added looser magwell variants of the Lower. Added Magwell Testers to aid in selecting the right one for your printer. The tester filenames line up with the Lower filenames, e.g. “MagwellTester_0.2mm_Looser” shares magwell dimensions with “Lower_0.2mm_Looser”

8/22/2024: Updated to v1.6. Add double-window Shroud. Looser tolerances on all the threaded rod holes.  Fix tolerances on some screw holes. Make priming block print a little nicer. Add 788-specific PTBack that constrains the spring nicer. Other stuff too, I'm sure.

8/23/2024: Fix inadvertent face delete on MagReleaseSmooth from v1.6. Add modular springrest PTBack and swappable springrests for K31, 788, and K25. Add even shorter stock.

8/25/2024: Updated to v1.8. Update Midbody. Now has magazine overinsertion prevention for both Kodas and Talons. Add new Slotted shroud

8/27/2024: Updated to v1.9. Big update. 

• New Lower, Plunger, Sear, and Trigger. THESE ARE NOT BACKWARDS COMPATIBLE AND WILL NEED TO BE UPDATED TOGETHER. New sear is caliburnoid instead of 3-part with the sliding catch. Should be more durable that way. Use a nice strong spring for the sear (the one you're already using will probably work, but you could also use a stronger one now). With a piece of https://www.amazon.com/gp/product/B076M59N52/ with a little precompression, the sear holds K25 with no issue, while only needing slightly less than 2.5lb of pressure on the trigger to fire.
• New optional “Right angled” MidBody and PTFront - these allow you to have a smooth gradient across the upper, if you choose. They aren't compatible with Rush, though, so I also kept the “Rush-compatible” versions with the angled cuts
• Added third shroud option: Slotted. Diagonal slots cut into the side. Neat!
• Added even shorter stock option. Very light, very short
•  

Update 11/2/2024: Added Capital 3D link

Update 12/14/2024: Crush 1.10 released

Notable changes include:

• PT Venting has been moved to a separate location to close the “PT gap” at the back of the tube
• Quick-spring-swap StockMount+Insert+Spring guides replace the “modular" setup from previous versions (this includes one 6mmx7mm ball detent hardware change)
• Metric files added for Pusher, Priming block, and all body parts that the threaded rods ran  through. Designed for M3x250mm rods and nuts
• Added Talon-Specific mag catch. Holds the mag 2mm lower to prevent dart-biting with Talon mags. There are now two MagReleaseSmooth files, make sure to choose the one for the mag type you're going to primarily use. (Both files shown overlapped here)

Significant overhaul of the CAD, but the highlights are:
 

Converted to straight talon / koda / tachi

Uses an MGN9C linear rail

Uses the Lynx main grip