I have been working a lot on my second colander design idea. This has taken me much longer to create than the one I posted earlier this week. I prefer this design however It isn’t yet finished and I have some tweaking in T-splines to do. I also need to design the handle so that this can be printed separately as it is too large for the printer bed size.
I am a little concerned about the size of some of the gaps in the piece. I will print a version as it is after the tweaks to test and I can also use this model to develop a fruit bowl for my container.
This afternoon I have been building a 3D model of a design for a drinking tumbler. Because of the height of the piece I will find this hard to press from a mould so I am going to try and slip cast this along side the wine goblets. The CAD model is just over 16cm which I am hoping will give a good size after taking into account shrinkage during the firing process.
I am going for a similar design to my whisky glasses as I wish for the same theme to run through out the collection that will be used in my kitchen. These pieces will be smooth all over as apposed to the whisky vessels which have texture down one side.
Today I have been trying out the press mold for my whisky glasses. The first few I did were a little floored but the more I made the better they became. My 3D printed chizel was perfect for cutting off the excess clay from the top of the mold. I was keen to see the effect of using molds printed on different machines. The mold from the ultimaker gave a much smoother finish to the pieces. I like the effect of the two contrasting textures.
Close up showing both textures in the clay.
Selection I have made so far.
Some of the vessels came out with areas that were not smooth. I found placing the clay back into the molds and pressing them again sorted out this problem.
Mold before use.
Clay pressed into the mold.
Clay cut with 3D printed chisel.
To speed up the drying process I used my hair dryer. This worked well for the clay but warped the outside of the orange mold slightly with the heat. The inside seems to not have been effected which is good.
Clay smoothed down and drying also showing warped mold.
After spending Saturday and Sunday trying to print out the press mold from my M3D micro I have been left with a pile of nice white and orange spaghetti resembling parts of my mold. I managed to get one half of the mold printed ok. This is in orange PLA. This morning David at the City of Glasgow College kindly printed the second half for me in a bright red PLA from the College ultimaker machine. The ultimaker gave a much smoother finish than the M3D. I will try the two parts with clay but may need to get both printed on the same machine.
Failed M3D print on lowest quality setting.
Print from the ultimaker machine.
I did manage to get a few samples from the half build press molds over the weekend. I placed the join of the molds where the join of the triangles meet in the piece so that the final piece is less messy to look at by eye. I used my 3D printed Chizel to take the excess clay off the mold.
A few of the first pieces I tried were quite difficult to get out of the molds when wet. I tried spraying the mold with wD40 before hand and then drying the clay a little with my hairdryer before removing. This made the process much easier.
I am happy with the form of the pieces. I think maybe I should try accentuating the overhangs in some places where they might be a little subtle or lost compared to other sections.
After spending a few weeks playing with porcelain and designing the ceramic bedroom light it has given me some ideas for making drinking vessels for my container. I have been coming up with some designs in my sketchbook along the same lines as the base of the bedroom light I have designed.
Through these pieces I would really like to be able to show the mixture and contrast between the handmade and the use of CAD. What I really enjoy about this with clay is the way in which clay is naturally so organic and malleable by hand. It makes the process easy to both impress on and use CAD but also has a warm hand made finish or feeling.
The glasses will be pressed into CAD molds and hand finished on the inside. I would really like to use a simple white cracked glaze on the outside and a more metallic glaze splash of colour on the inside.
Render of shot glass designs.
Last night I came home from work excitedly with plans to print a small shot glass and make them over the weekend. As I went to bed last night I set my printer up to print the mold through the night. I woke up at 4am to a strange buzzing noise. As I got out of bed I found a big pile of white spaghetti in my printer. The print was due to take 7 hours, so I collaborated the printer set up the print again and went back to bed.
My overnight print fails.
The same thing happened at 8am and again at 10am. I have cut down the mold size a little to make the build 5 hours and put on to build again. Fingers crossed this one is going to work so I can make some shot glasses later.
I have got my bowls back from the bisque firing. Some of them are looking good. Two are a little wonky due to both using the clay too thinly as well as the mold being made from plastic not plaster. I am going to Glaze them on Monday so I hope they work out in the next firing.
Hi Folks, this is my first blog post for what I hope to become a place I can document, share and record my ideas over the next few years, whilst researching my PhD.
I plan to spend the next few years building my own house and workshop and contents through 3D printing all the tools I will need.
This week I have started thinking about bedroom lighting and ceramic items. I 3D printed some press molds last week from my home 3D printer. I was restricted by the scale I could print from my M3D as it has such a small build plate size
One of the trickiest things about using the a press mold direct from the printer in plastic is it’s lack of porosity. Plaster molds will soak up some moisture from the clay allowing for some drying and making it easier to remove. The final results were a little wonky due to this.
I was thinking about smoothing off the press before using it. However I wanted to see what the effect of print lines would have to the texture of the porcelin. I was quite happy with the finished texture. I’m looking forwards to getting them fired and glazed.