Wednesday, December 29, 2010

Boxing Day Shirt


I managed to find some time over the Christmas holidays amidst the food and festivities to return to my Singer for a cute little project. On Boxing Day I happily spent the day in my pyjamas at home coming up with the design for this new top. 

Because I had no plans to leave the condo I rummaged around for random pieces of fabric and notions and rediscovered some green and red binding in my sewing box. I spent a few hours hand-stitching the roses and flower stems on the front and back of this top, then assembled the two halves using the Singer. After trying on the top I decided it looked a bit too boxy for my liking so I added white ribbon all the way around the upper portion to break up the blank space. Next came a few red buttons for detail and red binding to tie up the back. Voila! 

Saturday, December 18, 2010

Lost Wax Casting: Koi Cuff Bracelet


In my model-making class last week I started a cuff bracelet which will probably take me into the new year. This project will give me something to do during the Christmas break when we're off for a few weeks. I was inspired by a design I saw online here. Pretty ambitious I know, but hey it's something to strive for.

After sawing out a thick block of wax for the cuff bracelet I used the drill press to take out the middle section. I drilled a series of holes around the inner diameter and then cut through the remaining bits of wax with a regular jewellery's saw frame. Then it was time to file, file, file!

For now I'm keeping the cuff quite thick to provide support until all of the design has been carved into the front.  After that it can be hollowed out from the inside to reduce the cost and weight of casting.

Design for new bracelet
Here is the design I plan to use for the bracelet.  I found a nice stencil for a single koi online so I simply mirrored the image and added some more flowers as filler. I sized the design for my bracelet, printed it, and  taped it to the wax cuff for transfering. Using a pin I transferred most of the design onto the wax, leaving out the more intricate details such as the fish scales and the smaller flowers. This took about an hour.


Design transferred to wax using pin-pricks

It took me about 3 hours with the flex-shaft and a set of burs to create a sunken relief for the blackspace in my bracelet (I was way too timid with the burs). The instructor thought this project would take 40 - 50 hours to complete - so far I've put in 7 hours. I'll have to decide just how much fine detail I want in this bracelet but ultimately the plan is to have it ready for casting in January before my courses end.

Tuesday, December 07, 2010

Lost Wax Casting: Dragonfly Pendant




For my next pendant project I decided to try a dragonfly and aimed to make it thinner and lighter than the swan.  I started with a 2mm-thick piece of wax and filed it down to 1.7mm.  Then I used needle files to start forming the overall shape of the dragonfly and borrowed a graver from the instructor to do the grooves in between the wings and beads of the body.


Here it is after I finished casting it in sterling silver.  Again the white colour is from the fine silver which  hasn't been polished off yet.  I made a rubber mold of this pendant after soldering on jump rings and polishing it down a bit.  This time it was alot more difficult to cut the two halves apart in the same plane where the pendant was because the dragonfly is much thinner than the previous swan pendant!



I ended up giving this necklace to my friend and then cast one of the blue duplicates for myself.  I tried finishing the pendants with the polishing wheel to get a high-shine coating but was unsuccessful.  Because the pendant is so thin it heated up very quickly with friction.  This softened the metal (making it easy to bend) and meant it was very difficult  to hold onto the pieces for more than a second or two at a time - hot hot hot!  Eventually I settled for using a tiny polishing wheel with my handpiece.  It couldn't do the job as well as a polishing wheel but saved me from getting any more burns on my fingers!

Friday, December 03, 2010

Copper Spoon: Forging Technique (cont'd)


copper blank and brass template
I did it, I managed to saw out the copper blank in just over 40 minutes and I'm proud to say I didn't break a single saw blade. After filing down the edges and annealing the copper I went on to saw out a brass spoon template. This took about 10 - 15 minutes which seemed like a breeze compared to the 3mm thick copper.




Results after initial forging
Next it was time to tackle the forging hammer. Which really meant pounding for a good 20 minutes and then switching to a lighter hammer. My forearms were throbbing at that point and I figured I was better off having to pound harder with a lighter hammer than having my forearms scream at me for the next two hours.


I had a very difficult time forming the copper blank into the shape of the brass template. The goal was to thin out the spoon bowl and top end of the handle, meanwhile shifting the excess copper into the neck of the spoon where it should be thickest. Shifting metal is easier said than done!

Trying to shift metal from the bowl to the neck of spoon


As you can probably make out in the photos the bowl of the spoon is still quite thick so I have a long way to go. We had the option of also making the spoon out of silver, which only one student chose to do. I wasn't quite confident enough to lay down $80 for a silver spoon but unfortunately that means not being able to use this copper spoon once I'm finished.