Wax Chasing & Lessons learned

I worked on the first two wax castings of "Ascension". The folks at Art Castings were very helpful and Mac did some good work on the chasing. However, he was working blind, as he got her in pieces and had no real idea how she went together. Can't imagine doing that! So I learned that it's a good idea to provide a series of photos for them to work from.

Another issue was that there was some confusion over how the bronze was to be mounted onto the base. Since they didn't have a photo, they thought it was one way and realized that there wouldn't be enough metal to support the floating woman.  In reality, there was, mounted the way I had planned. So I had to go back and carve out all the wax that they had added.

Never worked with wax before so after a few hours at the foundry, I decided to pack her up and take back to my studio, since it was taking longer than I thought. You can see my desk with the various tools. The hot tool that is plugged in on my desk proved much too hot to use on the sculpt much. It vaporized the wax and melted much too aggressively to be much use to me. So I kept it on and placed my metal tools on the hot tool to heat the metal carving tools. That worked much better, overall.

It still took many hours, but that is mainly due to my inexperience and I'm sure it will go much faster next time. I may even chase the entire wax next time to gain even more understanding of the practice and to familiarize myself with what casts easily or harder to incorporate into my next sculpt. After finishing her up I took her back to Art Castings. Luckily for me, Jeanne too a look at the photoshopped image I had made explaining the mounting process - she didn't think it would work - that the stone would chip!

So I buzzed over to the Base Shop and spoke with Brian. Thanks to Brian and Jeanne, we were able to come up with a solution that will enable me to mount the sculpture as I had planned, with a bit of extra effort, and another lesson learned!

Wax pour for "Ascension" Bronze casting

It was quite foggy this morning and I nearly postponed my drive down to Art Castings in Loveland. But, since I'd already filled my travel mug with hot tea and charged up my camera, I decided not to wait and I'm quite glad!

When Jeanne greeted me, she knew just where my work, "Ascension", was in the maze of other sculptor's molds and waxes. They had just poured the first two waxes and Mac was starting to chase them.

In the montage photo:

1) collection of rubber molds inside the mother-mold

2) the mother mold encasing the rubber like a clamshell

3) you can see that the rubber comes out of the shell

4) the mother mold seams together tightly

5) hole where the wax is poured in

Here are some photos of the hollow wax that was poured. Mac is working on taking out imperfections in the wax. He will also fix where the armture came through. When he reaches a certain point in the process, they will call me and I will head down to spend the day doing finish chasing and detailing until I am satisfied before preparing the wax for the bronzing process.




You can see the whole process of making a bronze at the Art Castings site http://artcastings.com/casting-process.htmlhttp://artcastings.com/casting-process.html

Ceramic Paperclay Fox Sculpture

You may remember that I sculpted a small fox in oil-based clay. I'm still working on the wax pour of it for bronze. I decided that I wanted to make a larger version of this fox and sculpt it using a water-based clay for firing. Since Mile-Hi was out of the CT3 clay that I had planned on using, I opted to try this in water-based ceramic paperclay instead. I didn't do any measuring - I just dove into sculpting. While I did use crumpled paper for filling out the body, there was some distortion and I felt that there was too little clay in some areas and too much clay in others. So I cut this into pieces, hollowed out and reassemble before I completed the sculpting.

I was pleased to find that A) it was as much fun to sculpt the fox the second time around and B) I had no trouble enlarging the sculpture while keeping the same look and feel using a different medium. So, now it's drying in preparation for firing later.

First wax pouring of miniature fox sculpture

This is my first time pouring wax in preparation for the lost wax bronze process. I have an old crockpot that I'm using to heat the wax. This wax is something I bought an embarrassingly long time ago and can't remember what kind it is. Karen, at Sculpture Depot, assured me that pretty much any wax will work and different kinds can be intermixed. I thought I'd be really smart and put the block of wax in an old metal can inside the cooker to keep the cooker from getting wax all over it. Nice idea, but it dripped and got wax it it anyway ;-)
I'm using the pour mold (commonly called a dump mold) that I made of my miniature fox (you can see on earlier posts). After melting the wax, I took a small cup, dipped it into the melted wax and poured into the mold. Then swirled the mold around and emptied the wax back into the pot. A layer of wax remained inside. I did this several times to build up layers.
1) crockpot with melted wax in can
2) wax in the mold (I tried tape to secure the mold but it didn't stick very well - rubber bands worked better)
3) the wax mold of the fox - it has flaws and the base would need to be trimmed.
4) I was anxious to see the wax and demolded too soon - the wax was still quite warm and broke.You can see how the swirling of the wax creates a hollow casting.
5) I figured it would take several tries to learn the process enough to get good results. Luckily I can simply melt down the rejects to reuse the wax.
6) Back into the pot for remelting. I tried again that night - but the wax wasn't hot enough so it was a tad lumpy. The results were another imperfect casting so will try again later.

Cast sculpture miniature fox

This is the final cast piece from the mold I made of my miniature fox. You can see the original oil-based clay sculpt on my December blog. The instructions and process of how I made the mold are in the previous post.

This was cast using Smooth-On's Smooth-Cast 300 liquid plastic.

This is an easy product that is mixes compounds A+B in equal amounts. The plastic cures in a matter of minutes to a very white plastic. It demolded from the silicone very easily.

The down side is that, well, it's PLASTIC. Not my favorite substance. But this is a learning process . I painted the plastic casting using acrylics to mimic dark stone and the results are fine. I should have done a little more clean-up to the lines where the mold joins together, but for a first try at casting, I thought it came out well.

I could also pour melted wax into this mold, clean up the wax and take it to bronze at some point. We'll see ;--)

Miniature Fox Sculpture in Oil Based Clay

 I need to start learning the mold-making process, so I sculpted a small image of a fox in oil-based clay. I chose the animal and the pose to make for as easy of a mold as possible - notice that the entire composition is very pyramid in shape. I made a simple armature of a nail driven into a small wooden disc. Then I used oil-based clay to sculpt the fox in a more stylized manner.

It was fun to sculpt something different from figure and interesting to try and capture the essence of a fox without worry of trying to be anatomically correct. The oil-based clay is still kind of new to me and the sticky texture is still something that I'm getting used to. The upside is that you can stop and start as many time as you wish and it never dries out like water-based clay.

This measures 3.5" tall and is sculpted in Classic Clay purchased from Sculpture Depot.  Next I'll be showing the process that I used to make a pour mold of this sculpt. I learned this technique in the sculpting class that I took with Rik Sargent at the Denver Art Students League.

Sleeping Nude

Busy, busy, busy. Unfortunately no time to post lately. I had a wonderful time at Sculpture Depot in Loveland last month. They sponsored a workshop with Philippe Faraut (my second). The first was a portrait workshop years ago, so I was thrilled to get to do a workshop on the full figure with Phillipe.  It was a good class - a nice, diverse group of people to share the journey. We spent two days doing studies that I enjoyed, then destroyed ;-) Then a day doing one larger piece. I'm still working on that one at home from memory.

I'm getting better at letting go, smashing up studies or sculpture that isn't working. Don't get me wrong - I was quite pleased with many of the small studies, but the process and experience was what I was after, not the physical product. So I only kept one of the smaller studies. We had about 4-5 hours with the model in this pose, then I did the rest at home. This is water based clay with low grog and the piece is about 9 inches long. This one I sculpted solid and didn't hollow. I'll allow to dry very, very slowing and try firing it my my ancient, questionable little kiln. If it doesn't make it, well, it was fun to sculpt anyway ;-0