For Halloween, I dressed up as a half-elf thief/rogue. I decided to make a simple custom 3D printed weapon to compliment my outfit. After looking around at different dagger types, I decided to model one resembling a medieval celtic style.

Dagger Dimensions:

• Total assembled length is ~395mm (39.5cm/15.6in)
• Blade length assembled is ~235mm (23.5cm/9.25in)
• Blade length unassembled is ~253mm (25.3cm/9.96in)
• Blade width at guard is ~25mm (2.5cm/~1in)
• Handle length assembled ~137mm (13.7cm/5.4in)

The dagger comes in 3 parts. The parts fit together tightly and shouldn't require glue. That said, the tolerances are very tight, so the parts may need some light sanding or trimming to fit all the way in.

The Sheath:

The sheath comes in two parts. I designed three top halves and two bottom halves They can be combined in any fashion (any top with any bottom), however, my initial thought was to create 3 different types of sheaths. One has no connectors, one has two connectors on the top, the last has two connectors on the sides.

Print settings:

Blade:

• Because of the fine edges and tip, I printed the blade at .1mm
• The blade is thin in some sections (2mm), so to give it a bit more strength I used 50% infill
• The blade bevels from the center out on both sides; it has no good edges to rest/print on. I used supports and printed it 'flat' on a diagonal (the only way it would fit on my printer). That worked, but the side with the supports required smoothing. There's probably an easier/cleaner way to print this

Guard:

• Because of the detailing/designs on the guard, I printed at .1mm
• Infill was 20%
• I printed the guard with the curved portions facing up. To help keep it steady, I used a raft and custom supports for each 'arm' to help keep the smooth curves as they bent upward.

Handle:

• Printed at .15mm
• Infill was 20%
• I printed it standing straight up, so used a raft to help keep it steady. No supports

Sheath:

• Printed at .15mm
• Infill was 20%
• I printed the two halves standing straight up, so used a raft to help keep them steady. Supports needed for the loops

Post-Printing
 

Assembly Lessons Learned

The tolerances for the dagger are very tight. You will most likely need to sand or trim sections to help them fit in all the way.rnrnBe careful when assembling; the blade is sturdy but thinish and can bend or break if not pushed in from the thicker sections. If it takes too much force to push in, then you may need to trim/sand some of the connecting parts of the blade.rnrnI left mine all black to fit my theme. However, this dagger would look amazing if painted in authentic colors. Please share if you do!