Pen holder – Movable Gantry CNC Machine 24

Sep02
by Thomas Yoon Chee Tuck on September 2, 2020 at 4:08 pm
Posted In: CNC

A cnc milling machine could be very easily converted to a pen plotter by just replacing the spindle with a pen.

pen holder for pen plotter attached to the z-axis

pen holder for pen plotter attached to the z-axis

I wanted an attachment which was simple and could be used for both the movable gantry cnc machine and the movable bed cnc machine, so the measurements was cut to the optimum size accordingly. Also I wanted it to be versatile enough to be able to fit in a variety of pen or pencil sizes.

So I came out with a single piece of wood strip, cut lengthwise with a v-groove and fitted with a clamping strip to hold a pen in place. The v-groove was cut long enough to accommodate the whole length of the pen. This pen assembly was secured in position in place of the spindle holder of the cnc machine.

Faced wasteboard

Faced Wasteboard contain no lines for reference. It was difficult to position any work pieces for machining.

The whole assembly worked well. One of my first jobs that I did with the pen plotter was to mark out the waste board of the movable gantry cnc machine with evenly spaced lines. These lines helped me align and clamp my work pieces easily so that I was able to position them accurately when I wanted to mill them.

The waste board that I install at the movable gantry cnc machine bed was faced flat previously so that all work pieces when placed on it would be placed exactly flat. Unfortunately, after I had done the facing, what I was left with was a blank waste board with no reference marking. Drawing the lines over it was a good move.



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2.5D Divine Mercy Edge Lit Lamps – Movable Gantry CNC Machine 23

Aug20
by Thomas Yoon Chee Tuck on August 20, 2020 at 5:49 pm
Posted In: CNC

Because of the Covid-19 pandemic situation currently, movement is restricted. For many months now, I had to attend online masses on the internet. There were a few local Catholic churches that broadcast online masses on the internet. However, sometimes there were hiccups, and some video streaming transmissions or sound were not smooth. So I had to find out where else I could attend an online mass at a suitable time.

That’s when I found the broadcast by the Divine Mercy Church in Penang. I found streaming of the video very smooth and the graphics very easy to follow. I liked it. But what I specifically liked was the singing of the Divine Mercy Chaplet before the mass.

I had been praying the rosary all this while. I was not aware that the Divine Mercy Chaplet could be sung! With my curiosity aroused, I searched the internet for more information. Then I noticed that all the images of the Divine Mercy were either in the form of flat paintings, flat stained glass or in the form of sculptures.

But the 2 rays found in all the sculptures were solid structures. It was as if some solid triangular large and heavy objects were hung from the chest of Jesus Christ. I found that very odd. They did not look like rays at all!

Since I was experimenting with CNC cutting of 2.5D images, and edge lit acrylic lamps, I thought I could design something better. I could let the rays be really lighted. I could also illuminate the image of Jesus Christ so that it would looked like an apparition, because according to my research on the internet, Saint Faustina Kowalska reported a number of apparitions during religious ecstasy which she wrote in her 1934-1938 diary and that according to her diary, she cried upon seeing that the finished picture by the original artist on canvas was not as beautiful as the vision she had received, but Jesus comforted her saying, “Not in the beauty of the color, nor of the brush is the greatness of this image, but in My grace”.

Does it become more beautiful by 2.5D engraving and lighting it on acrylic? You be the judge.



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