Summary

These are 3D-printed handle for Katana made of Aluminum / Vynil door sweep.

This particular door sweep from Home Depot was used as a base for the blade, but similar ones can be used as well, just adjust the 123D model:
http://www.homedepot.com/p/Frost-King-E-O-1-5-8-in-x-36-in-Aluminum-Brown-and-Vinyl-Door-Sweep-B59-36H/100118625

Print Settings

Rafts:

Yes

                                            <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>30 micron</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><h3>Spacers</h3><p>Align two door sweeps and check if holes aligned perfectly, if so, then print 3 regular spacers and insert them between holes in the sweeps to stop them from shifting.</p><p>Once spacers are inserted, connect two pieces together with masking tape with one pass over the top and another over the "sharp" vinyl side of the blade.</p><h3>Tip</h3><p>Glue together left and right parts of the tip (two halves are much easier to print without supports as one side is flat).</p><p>Insert the tip between sweeps on a tip end and align notches to fit into two holes to not let is shift or fall off.</p><h3>Handle</h3><p>Remove 170mm worth of vinyl from the handle side and push main guard part of the handle half way through.</p><p>Then interlock with end part of the handle and pull through to align the pin hole with hole on the door sweep.</p><p>Push pin through to hold handle in place - you might need to file the metal through the hole and a pin to make sure not to break the handle as you push it through.</p></div>

Katana handle and parts