Saturday 24 October 2015

JC week 11: Cross guard

NB: journal entry for the Jewellery and Small object module at South bank Griffith university (QCA) to view the full journal click here

This post discusses the bending of the cross guard and riveting of the brass cross guard panels.

Bending of the cross guard

The intention is to create a bend in the cross guard so that it curves half way around the threaded blade shaft.
Step 1: bend the aluminium ( annealed) over the blade thread shaft.
Step 2: using a pair of pliers ( while the crossguard is still on the shaft: figure 1) carefully bend the cross guard so that it runs at a 90' angle.
Step 3: repeat process to other side of cross guard.
Step 4: remove the cross guard from the threaded shaft and lay on a flat surface to make sure that both sides are uniform.(figure 2 ) , gentle pressure was applied by hand to flatten the cross guard.
NOTE that annealed aluminium is very soft.

figure 1


figure 2




The three portions cross guard, woodencore handle and test blade combined to check for aestheics


Riveting brass cross guard panels




ABOVE : the two brass cross guard panels prepared earlier
Step 1: the two brass cross guard panels are bent around the handle to form a similar shape to the aluminium cross guard wings


Step 2: align the two brass panels either side of the aluminium wings (cross guard) to hold the three parts together I used 1 inch clips
Step 3:Drilling the rivet holes. The copper wire used in this project for the riveting is 1.5 mm thick, the drill bit used is the same thickness. Drill a hole through all three of the parts.



Step 4: Push the copper wire into the hole making sure that it goes all the way through



Step 5: Cut the wire so that at least 1mm is exposed either side of the join



Step 6: Using a tack hammer gently flatten either side of the wire onto a firm metal surface, I use the flat of my vice. 
Step 7: repeat this process for the other end of the cross guard



Some reshapping of the brass cross guard panels was needed but here is the finished cross guard attached to the handle. 

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