{"data":{"model":{"id":"415940","slug":"havran-foam-dart-blaster","name":"HAVRAN Foam Dart Blaster","authorship":"author","club":false,"excludeCommercialUsage":false,"price":null,"eduProject":null,"ratingAvg":"0E-10","myRating":null,"ratingCount":0,"description":"

Warning: This blaster is not suitable for small children. All involved should be wearing eye protection at all times when using it. It hits closer to Paintball or Airsoft than to common Nerf blasters.

Havran is a high performance blaster that uses widely available hardware in combination with printed parts and shoots short foam darts available from toy stores. STEP files are available for modification.

Some notable properties and features:

Uses Worker Talon compatible magazines
High performance configuration muzzle velocity ~80m/s, ~260fps
Low performance configuration muzzle velocity ~40m/s, ~130fps
Linear bearings on priming slide to reduce friction losses
Rapid tool-less access to spring and plungers for modifying performance
Trigger lock blocking fire when slide is out of battery
Barrel threaded into receiver and overall stiff construction
Prints without supports and practically any cleanup

Bill of materials

Assembly guide

Print instructions

Print without supports oriented as shown on one of the images. Overhangs, if any, oriented towards the fan if your printer has only one. Tested mostly with 1.5mm thick walls and 15% infill PLA.

HP16 Plunger part might require brim.
HP13 Front grip jaw should have 4mm thick walls

If you want a mirrored variant, you only need to mirror parts HP02 Trigger, HP03 Trigger guard and HP07 Rear sight in the slicer and use HP01v2 Receiver instead of HP01v1 and HP14v2 Ram instead of HP14v1.

Revisions and changes

2023-03-19-Revision 1 release
2023-06-29-Link to top rail accessory added
2024-04-27-Version 2 of Part 14 added for mirrored variant.
2024-12-01-Revision 1.1 release with updated HP16 plunger geometry, link to K26 spring parts added and chronograph barrel adapter added to tools.

Links to accessories

Top rail for HAVRAN foam dart blaster

K26 spring parts for HAVRAN foam dart blaster

License CC0 1.0

You can do whatever you want with it without my knowledge or approval. I would prefer if you kept attribution, but you don't have to.

","category":{"id":"34","path":[{"id":"30","name":"Toys & Games","nameEn":"Toys & Games","description":"Idle hands are the devil's playgrou\u00adnd. Make yourself and your kids busy with some cool 3D printed games. Print items for both indoor and outdoor play.","__typename":"CategoryType"},{"id":"34","name":"Outdoor Toys","nameEn":"Outdoor Toys","description":"Go outside with printed toys like 3D-printed pull copter, slingshot, toy gun, frisbee, sand play set, boat, flying wing, plane, or rocket.","__typename":"CategoryType"}],"__typename":"CategoryType"},"modified":"2025-02-08T06:47:39.630704+00:00","firstPublish":"2023-03-19T07:35:33.963335+00:00","datePublished":"2025-02-08T06:47:39.608393+00:00","dateCreatedThingiverse":null,"nsfw":false,"summary":"Spring powered pneumatic foam dart blaster designed to be easily printed and easily modified for wide performance range.","likesCount":80,"makesCount":2,"liked":null,"printDuration":null,"numPieces":0,"weight":null,"nozzleDiameters":null,"usedMaterial":null,"layerHeights":null,"mmu":false,"materials":[],"dateFeatured":null,"downloadCount":176,"displayCount":2738,"filesCount":72,"privateCollectionsCount":48,"publicCollectionsCount":48,"pdfFilePath":"media/prints/415940/pdfs/415940-havran-foam-dart-blaster-d4857506-53f8-4039-b0b4-136dc0165400.pdf","commentCount":26,"userGcodeCount":0,"remixCount":4,"canBeRated":false,"printer":null,"image":{"id":"3816808","filePath":"media/prints/415940/images/8272582_a79bf9e3-a967-4f8e-ae26-fec41e0bb611_e453e094-6fa3-4861-9d8d-0a061f49ec78/img_5285.png","rotation":0,"imageHash":"qRgGDYIvikjPOaVXw9SQmpCIDArb","imageWidth":1920,"imageHeight":1382,"__typename":"PrintImageType"},"images":[{"id":"3816808","filePath":"media/prints/415940/images/8272582_a79bf9e3-a967-4f8e-ae26-fec41e0bb611_e453e094-6fa3-4861-9d8d-0a061f49ec78/img_5285.png","rotation":0,"imageHash":"qRgGDYIvikjPOaVXw9SQmpCIDArb","imageWidth":1920,"imageHeight":1382,"__typename":"PrintImageType"},{"id":"1696686","filePath":"media/prints/415940/images/3532725_01fc3628-06e5-4493-8300-9c5b90fa1187/2023-03-18-19_13_24-greenshot.png","rotation":0,"imageHash":"OAgKBIK2l5iHeHifhXkafKDBBw==","imageWidth":1920,"imageHeight":1080,"__typename":"PrintImageType"},{"id":"1696629","filePath":"media/prints/415940/images/3532636_6ed61e66-a5a9-406f-bfe5-b4aa36f9acb9/img_5286.jpg","rotation":0,"imageHash":"6igKDYL1SqW6R4dWlqh3iKJ/A/MH","imageWidth":4032,"imageHeight":3024,"__typename":"PrintImageType"},{"id":"1696630","filePath":"media/prints/415940/images/3532635_dd097260-b981-4af7-9a54-f79514498fc4/img_5287.jpg","rotation":0,"imageHash":"5igODQL4ZYqIZ2hImIiHmPhsW/vj","imageWidth":3024,"imageHeight":4032,"__typename":"PrintImageType"},{"id":"1696631","filePath":"media/prints/415940/images/3532634_0cbfebc7-81be-4c21-91cd-156baddde27a/img_5288.jpg","rotation":0,"imageHash":"JykGDYS0yoz2qSSdo5hUZnnPu/Kb","imageWidth":4032,"imageHeight":3024,"__typename":"PrintImageType"},{"id":"1698282","filePath":"media/prints/415940/images/3536373_135b2632-65d4-4529-8f85-69fbe8ed2fdc/2023-03-19-08_20_55-_bez-nazvu-prusaslicer-250-zalozeny-na-slic3r.png","rotation":0,"imageHash":"necFFIL26Jl9eYiPdYz2d25/5w==","imageWidth":2065,"imageHeight":1225,"__typename":"PrintImageType"}],"tags":[{"name":"blaster","id":"639","__typename":"TagType"},{"name":"nerfgun","id":"2104","__typename":"TagType"},{"name":"nerfblaster","id":"16920","__typename":"TagType"},{"name":"nerfhomemade","id":"34177","__typename":"TagType"},{"name":"foamblaster","id":"43612","__typename":"TagType"},{"name":"dartblaster","id":"78409","__typename":"TagType"},{"name":"foamdartblaster","id":"94875","__typename":"TagType"}],"thingiverseLink":null,"filesType":null,"previewFile":{"id":"1853016","filePreviewPath":"media/prints/415940/stls/3532732_5cb9fb99-5a79-49e4-b66c-e1ceefc14987/ha01r1-havranassembly_preview.png","__typename":"STLType"},"license":{"id":"7","disallowRemixing":false,"__typename":"LicenseType"},"remixParents":[],"remixDescription":null,"__typename":"PrintType","user":{"id":"101845","handle":"IvanUrbanek","verified":false,"dateVerified":null,"publicUsername":"Ivan Urb\u00e1nek","avatarFilePath":"media/auth/avatars/7d/7d4c5c3f-38a8-4a66-9681-5a012549af31.jpg","badgesProfileLevel":{"profileLevel":25,"__typename":"BadgesProfileLevelType"},"__typename":"UserType","isFollowedByMe":false,"isHiddenForMe":false,"canBeFollowed":true,"billingAccountType":"personal","lowestTierPrice":null,"highlightedModels":{"models":[{"id":"291744","name":"Skadis continuous shelf","slug":"skadis-continuous-shelf","ratingAvg":"4.9625000000","likesCount":963,"liked":null,"datePublished":"2023-02-26T17:25:52.885340+00:00","dateFeatured":null,"firstPublish":"2022-10-11T17:56:43.616647+00:00","downloadCount":4010,"mmu":false,"category":{"id":"50","path":[{"id":"48","name":"Hobby & Makers","nameEn":"Hobby & Makers","__typename":"CategoryType"},{"id":"50","name":"Organizers","nameEn":"Organizers","__typename":"CategoryType"}],"__typename":"CategoryType"},"modified":"2023-02-26T17:25:52.904741+00:00","image":{"id":"1270376","filePath":"media/prints/291744/images/2596112_b76a0e13-f450-4810-8bd6-5780a3f9e88b/475763d4-e02d-4f76-ba64-0e9b1a328bc8.jpeg","rotation":0,"imageHash":"5jgKHYrGSnd/lnd5dph3iAiFhGA4","imageWidth":4032,"imageHeight":3024,"__typename":"PrintImageType"},"nsfw":false,"club":false,"price":null,"user":{"id":"101845","handle":"IvanUrbanek","verified":false,"dateVerified":null,"publicUsername":"Ivan Urb\u00e1nek","avatarFilePath":"media/auth/avatars/7d/7d4c5c3f-38a8-4a66-9681-5a012549af31.jpg","badgesProfileLevel":{"profileLevel":25,"__typename":"BadgesProfileLevelType"},"__typename":"UserType","isHiddenForMe":false},"latestContestResult":null,"__typename":"PrintType"},{"id":"483356","name":"Hadley telescope tube subassembly - Vase mode","slug":"hadley-telescope-tube-subassembly-vase-mode","ratingAvg":"4.6666666667","likesCount":44,"liked":null,"datePublished":"2024-05-01T15:03:36.773674+00:00","dateFeatured":null,"firstPublish":"2023-05-18T11:41:35.853921+00:00","downloadCount":185,"mmu":false,"category":{"id":"91","path":[{"id":"90","name":"Learning","nameEn":"Learning","__typename":"CategoryType"},{"id":"91","name":"Physics & Astronomy","nameEn":"Physics & Astronomy","__typename":"CategoryType"}],"__typename":"CategoryType"},"modified":"2024-05-01T15:03:36.805527+00:00","image":{"id":"1910397","filePath":"media/prints/483356/images/4002208_54cbb61f-e81f-46c0-8afb-a01b91e06005/21596ed0-5b0e-46c3-8cf9-f8c2b6df45c4.jpeg","rotation":0,"imageHash":"awgKDYL8mXhOqYhXpblYqXZwawan","imageWidth":4032,"imageHeight":3024,"__typename":"PrintImageType"},"nsfw":false,"club":false,"price":null,"user":{"id":"101845","handle":"IvanUrbanek","verified":false,"dateVerified":null,"publicUsername":"Ivan Urb\u00e1nek","avatarFilePath":"media/auth/avatars/7d/7d4c5c3f-38a8-4a66-9681-5a012549af31.jpg","badgesProfileLevel":{"profileLevel":25,"__typename":"BadgesProfileLevelType"},"__typename":"UserType","isHiddenForMe":false},"latestContestResult":null,"__typename":"PrintType"},{"id":"415940","name":"HAVRAN Foam Dart Blaster","slug":"havran-foam-dart-blaster","ratingAvg":"0E-10","likesCount":80,"liked":null,"datePublished":"2025-02-08T06:47:39.608393+00:00","dateFeatured":null,"firstPublish":"2023-03-19T07:35:33.963335+00:00","downloadCount":176,"mmu":false,"category":{"id":"34","path":[{"id":"30","name":"Toys & Games","nameEn":"Toys & Games","__typename":"CategoryType"},{"id":"34","name":"Outdoor Toys","nameEn":"Outdoor Toys","__typename":"CategoryType"}],"__typename":"CategoryType"},"modified":"2025-02-08T06:47:39.630704+00:00","image":{"id":"3816808","filePath":"media/prints/415940/images/8272582_a79bf9e3-a967-4f8e-ae26-fec41e0bb611_e453e094-6fa3-4861-9d8d-0a061f49ec78/img_5285.png","rotation":0,"imageHash":"qRgGDYIvikjPOaVXw9SQmpCIDArb","imageWidth":1920,"imageHeight":1382,"__typename":"PrintImageType"},"nsfw":false,"club":false,"price":null,"user":{"id":"101845","handle":"IvanUrbanek","verified":false,"dateVerified":null,"publicUsername":"Ivan Urb\u00e1nek","avatarFilePath":"media/auth/avatars/7d/7d4c5c3f-38a8-4a66-9681-5a012549af31.jpg","badgesProfileLevel":{"profileLevel":25,"__typename":"BadgesProfileLevelType"},"__typename":"UserType","isHiddenForMe":false},"latestContestResult":null,"__typename":"PrintType"},{"id":"373297","name":"D20 - folding, snap-together game die","slug":"d20-folding-snap-together-game-die","ratingAvg":"5.0000000000","likesCount":83,"liked":null,"datePublished":"2024-05-21T20:09:50.861950+00:00","dateFeatured":null,"firstPublish":"2023-01-21T05:51:01.801913+00:00","downloadCount":371,"mmu":false,"category":{"id":"31","path":[{"id":"30","name":"Toys & Games","nameEn":"Toys & Games","__typename":"CategoryType"},{"id":"31","name":"Board Games","nameEn":"Board Games","__typename":"CategoryType"}],"__typename":"CategoryType"},"modified":"2024-05-21T20:09:50.886325+00:00","image":{"id":"1520134","filePath":"media/prints/373297/images/3141364_29a5f00f-5a70-4053-85fe-f05cb23fddfb/730b5ec0-3874-4bb7-976e-37de83d22d50.jpeg","rotation":0,"imageHash":"FHkKFYQLyHZmZoeDe1aXiC9E+mHE","imageWidth":3242,"imageHeight":2432,"__typename":"PrintImageType"},"nsfw":false,"club":false,"price":null,"user":{"id":"101845","handle":"IvanUrbanek","verified":false,"dateVerified":null,"publicUsername":"Ivan Urb\u00e1nek","avatarFilePath":"media/auth/avatars/7d/7d4c5c3f-38a8-4a66-9681-5a012549af31.jpg","badgesProfileLevel":{"profileLevel":25,"__typename":"BadgesProfileLevelType"},"__typename":"UserType","isHiddenForMe":false},"latestContestResult":null,"__typename":"PrintType"}],"featured":true,"__typename":"HighlightedModelsType"},"designer":false,"stripeAccountActive":null,"membership":null},"contests":[],"contestsResults":[],"prusameterPoints":null,"latestContestResult":null}}}