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AetherAnvil — Witchhunter Repeating Crossbow
Published: 2011-05-12 04:41:07 +0000 UTC; Views: 10970; Favourites: 58; Downloads: 111
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Description
Pump-Action repeating Witch Hunter LARP crossbow. 30 lb. draw. Tons of fun
Materials:
Oak
Blued Steel Pins, arm, mechanism, and Plates
Brass Pins
Vaneer Box
Stone Oil Leather
Carbon Fiber Arm
Custom cast foam arrows
Related content
Comments: 42
i have 1 question, how do you move the string back auto maticly?
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Pump action, shotgun style. Shoot, next bolt falls into place, pump, repeat.
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wel verry verry cool piece, can you pleas send me the plans how to build it? me and my father are looking fore a project fore the summer
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If you go through the facebook album, you can see the CAD drawing and step-by-step photo of how it was pieced together
[link]
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Hey, I've finally received all of the materials I need for my build; can you tell me how you worked out the length of carbon fibre needed for a 30lbs draw?
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Just grab one of these for a few bucks: [link]
Loop and friction tape your draw string on and mount it on the crossbow, then draw it back to the locking mechanism with the fish scale. If over, shorten arm, if under, double up the arms. This way you get draw poundage at length of draw, as per whatever your LARP groups rules are
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You don't need one, you need 12, and eleven friends to join you on the greatest hunt ever!
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[link]
Just the video of it failing
Sometime I will get around to upload a better one!
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Oops. 
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Hey, I was wondering what width/thickness the carbon fibre you used was, as well as the limb length, stock length etc? I'm building myself a bow out of sapele but prod material is the hardest thing to source.
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I believe it was this: [link]
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Cheers; that size isn't easily available in the UK but I believe 2mm by 12mm strip should work pretty well (and I can always tweak the poundage by changing the prod length or by layering the strip).
How heavy would you say those larp bolts are?
Great finish on the thing, by the way; it looks awesome. Did you ever fix the problems you had with it?
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Yep, some box shims worked well. Wrapped the arms in leather too, made for a better look. The bolts are very light, that is why I used cast foam (3 pound density), feather light. Keeps the impact down but enough weight to go far! I used PolyTek for the foam, but any brand will work. Look for self-skinning foam.
As for poundage, I found that it really didn't take much to reach 30 pounds draw with carbon fiber. Fiberglass is cheaper, easier to find, and more flexible, thus thicker arms, same draw weight, but better durability.
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Also, forgot to ask how you made the tickler (trigger) for this build; did you cnc it, cut it by hand out of plate, bend a piece of bar stock?
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The Rep-crossbow is one EPIC piece of weaponry
It really is. I like the detail and the whole look of it.
BUT... the foam-head quarrel, made out of a sports quarrel is one crazy perilous thing.
If its for style - no problem, if its for actual LARPing, think again.
My friend and co-LARPer had a very... exciting experience with someone who made LARParrows this way,
and was lucky enough the "marksman" hit the tree next to him (the metal head, pierced the foamhead and
stuck 2 inch into the wood).
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Thanks! There is also a lot more going on than cast foam over a quarrel there too 
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they removed the sharpshooter permanently from that LARP
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This is fantastic. Can you give some specifics on the what the prod (the bow portion) is made from?
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Carbon Fibre. I need to wrap in in leather or rope still to mask it look a bit better. Carbon fibre was chosen because I can finely adjust the length to acquire the club set foot-pound draw limits.
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Hi Epicfoam, wicked awesome crossbow!
I was trying to make my own crossbow, hopefully a repeater even, but don't know how.
Could you post some tips on how to make one? It'd be greatly appreciated
Grz. Orsouw
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Make sure to design everything out first (I use AutoCad, as seen in picture), use good materials (oak, steel, etc), and use the right tools (scroll saw, belt sanders, drill press). Carbon fibre works well for the arms due to the ability to trim length to club legal foot-pound draw.
The biggest issue I had is that the arrows were not guided well enough. I added additional shims which resolved the issue. Shims on the notch and mid shaft helped the most.
Arrow head consistency is important, so if you cannot cast the foam, try to keep consistent in your construction.
Study the posted photo well and lots of the secrets will be revealed. If you ever have a specific question, feel free to ask.
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Thanks a lot for your reply, it was really helpful!
I have one question though, how do you make sure the draw-weight is right when making your own bow like this?
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If you use fibreglass or carbon fibre for the arms, you can adjust the draw. This is achieved by using a fish weight to measure the draw and carefully adjust the length of the arm(I have an outer and inner arm on this, so I trim the inner).
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Fisfh weight, noted.
Do you think I could also do the bow in wood or metal? (I don't have carbon or glassfibre at my disposal)
I'm mainly wondering because I've heard LRP-crossbows where supposed to work like slingshots, with the power coming from the elastic instead of the bow itself.
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Fibreglass is really easy to get; driveway markers, chimney sweep rods, etc. Heck, just buy a kids fibreglass bow and use that
You can use wood and metal for arms too, just it is a whole lot more work to adjust. Fibreglass really does offer the best option to make a safe crossbow and tune it to the local rules easily and safely.
Carbon fibre, what I used, is definitely a lot trickier to get a hold of but there are numerous places online that sell.
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Damn this is awesome!
You wouldn't happen to have a video of it in action?
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That can be arranged this weekend 
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Great weapon!
I've allways asked myself, if it's possible to build one of these without making it look like a toy. Good work on that.
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I worried about the same thing, that is why I really focused on using steel/oak construction to give it a rugged feel. I made sure to gun-blue the metal and use only natural materials (sans the carbon fiber arms, which are rugged and black anyways). I also avoid modern fastening like screws and pinned all pieces. Thank you for the compliment, I am glad that it achieved the looks that I wanted
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That seems to be the only way to achieve the look, that you aimed for. If I'm allowed, I'll recommend that to anyone trying to build a crossbow like this.^^
It's a bit absurd, but single fire crossbows can be bought here with a completely historical look, but repeating crossbows mostly look like toys. Oo
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That is what I found too. I think much of that has to do with so many repeaters firing small bolts (ie chu-no-ku). This fires full 16 inch bolts and the whole contraption is quite large (and heavy). Not as convenient but intimidation is half the battle
Though this one was built using hand tools and small power tools, I do have a CNC and I am adapting this design to a more mass-produced version (using aluminum instead). I also need to make the arms look more authentic (wrap in rope?).
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The scale makes the whole thing more believable...firing small bolts at heavy armored enemys just looks strange. XD
Mass produced sounds interesting. The aluminium is becauce the CNC can't handle steel?
Wrap in rope could help...I'll contact you, if I find something, when searching through some german forums.
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Yeah, I can't do steel cutting 
Thank you very much for keeping an eye out, my languages are quite limited. As in one.
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Would be nice to know, which colors you can achieve by anodizing the aluminium.
A plasma cutter would be wasted money anyway...except you have a lot of other projects, which would make use of it too.
Language can be a problem, when searching for knowledge. I just speak english and german...but I bet there is a lot of good knowledge written in in french, italian and spanish in some Larp forums...
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Anodizing is nice due to it is creating an oxidized surface that traps dyes, so pretty much any color
I like CNC's, a shame that their costs are so high, both initial and maintenance costs. But past that investment, the time saved and the ability to replicate is so worth it.
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Sounds interesting. Would be nice to know, how exactly the results look.
Time in fact is money, especially in this case. XD
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