Slic3r modify meshes

Today, there was some time left for new experiments in Slic3r, or designing and printing multiple infill patterns in one print. This only makes sense when you use ‘infill’ as decoration in the design. In this session opqrstu3D designs and prints a coaster, or a thing you put under a glass if you want to avoid direct contact between the glass and a table.

I won’t explain the process, but to give an idea; every infill pattern has it’s own STL.
This coaster contains three patterns, which means: there are at least three designs involved. At least, because I also need a general STL (the object) and a contour STL.
In Slic3r, you load the object.stl and set zero top layers, zero bottom layers and zero perimeters. Next you load the other STL’s. These are the modifiers, they change the settings/content of the ‘object’ anywhere you want. I learned this method from publications of Steve Wood at He explains ‘modifying meshes’ perfectly in a four-part series. If you wanna know more, follow this link.

Today’s experiment resulted in four very un3Dprinted products. With some fantasy, these coasters look like they are made of some kind of fabric. ‘Modifying meshes’ rules!

Coaster © opqrstu 2017

Printed on 3D4makers PET-G. Five layers, layer hight 0.30 mm

Customize a light

It’s hard to earn money in 3D printing, because 3D printing is a much too slow production method. What do you do when you do not sell products?

Well, today I upgraded an old light system. This system was made for old fashioned, environment unfriendly, light bulbs. It’s too difficult to build a 12 volt trafo in this system, so I use an energy saving 220 volt light bulb to light it. But these bulbs are a too big for this system, so I need a new light shade to dim and upgrade the ugly light of energy saving light bulbs. In SketchUp, opqrstu3D customized an earlier light shade and printed it ‘infill only’. Creatr printed a beautiful light shade on an 5 hour print job. The print turned a lost light system into a trendy and friendly energy saving light. Instead of earning money, 3D printing saves money and energy!

customized light system © opqrstu 2017


Opqrstu3D was experimenting with ‘modifier meshes’ in Slicr3r to create a Picasso for a network art competition. Today, we proudly present, Abstract Painting 26 3D printed:

© opqrstu 2017

We could check out many more settings, but this is it for Picasso. You can change values for pattern, density and orientation. ‘Modifier meshes’ adds many new possibilities to the fine art of 3D printing. I would like to write more about this, but since we started using Instagram, it is getting hard to spent lots of time on writing decent stories. I can use my time much better at designing, printing and checking out different ‘modifier meshes’ settings. So, the days of this blog are numbered. Once in a while, like today, I will blog some of my achievements, but for following The Opqrstu3D Print Experience daily, Instagram @prdcz is the place to be.

One of the unique selling propositions of 3D design/printing is on demand product design. My greengrocer needed displays to pinpoint his wonderful products and asked if we could design and print the product. We could and did, but … it takes 50 minutes to produce one display. Greengrocer Labes needed 44 displays or 35 hours print time. Expensive displays, It’s just a small piece of plastic. To charge over € 10 a piece, could easily be considered a crime. But is it?

product display © opqrstu 2017

It’s custom made/designed and 3D printed. To check out the price tag, opqrstu3D uploaded the STL to it’s Shapeways shop and guess what? The Shapeways plastic price tag is € 10,06. When I sell the display at this price, I do not earn a penny!

On the display project, opqrstu3D learned two things:
1. My Leapfrog can print 44 almost identical products.
2. It is hard to earn money in 3D printing.

GARY: 3D printed 12 Volt Light

Opqrstu3D cooperates with Gerard Schoone to design, print and assemble new possibilities in 12 Volt light systems. Gerard is a very creative pioneer in 12 Volt. When he has an idea, he sends me a sketch and I work it out in SketchUp. A year ago, he wanted
a cone shaped shade. I designed and printed it, but there was a small problem: it’s a seven hours (infill only) print job and Gerard needed at least five cones.
Opqrstu3D printed a prototype, but has not enough spare time to do the complete job.

Two weeks ago, we finally found someone who could: Jasper Wille from 3D4makers.
He prints with an Ultimaker and can mount a big nozzle to reduce print time. Last week, Jasper printed 10 cones (print time pro cone 3 hours) and finally Gerard could build his light. It is a simple but great design. One cone builds many different lights. Meet Gary:

Gary © Gerard Schoone 2017 (height 100 cm)

opqrstu time out

It has been some time ago, but opqrstu is back.

The server overloaded, so I had to remove some post. Don’t worry, these post are still available, not as a blog, but as a fresh Ebook. It took some time to build this book, but the job is completed: The opqrstu 3D print experience part 2 is available. It is a free download.

fresh Ebook

Next post, new developments: Slic3r, modifier meshes.

opqrstu3D update

Today, I realised not everybody follows Instagram. So here’s an update about opqrstu 3D design and printing activities. Not blogging saved a lot of time to design and print. I am no writer, so composing a piece like this takes about three or four hours. Last month, I used these hours to design some great new and cunning thingies.

design & 3Dprint © opqrstu 2016
design & 3Dprint © opqrstu 2016

We like to combine 2D and 3D and did another Roy Lichtenstein artwork in 3D. This is ‘Masterpiece’ and it’s awesome to see how the robot printed text, you can even recognise the font opqrstu3D used in SketchUp: comic sans! Next, 3D4makers asked the robot to test some new PET-g colours; orange and purple; it printed some wonderful and perfect infill only bracelets. We also checked out very small detail printing: a 150 mm long T-Rex:
Amazing details again, this time in 3D4makers PET-G Gold. The Xmas tree was printed because it’s the time of the year. The triplets light is printed because 12 volt LED lighting is what opqrstu3D is really about. I am still prototyping this standing light and the blog will continue and keep you informed about the future of DIY 12 Volt (save energy) light design.

instagram 3D

Three years ago, opqrstu3D started 3D printing. Today, I am still using my good old Leapfrog Creatr 2013. And, I still add posts about our 3D print experience. This blog started out of frustration. Today, it’s more or less an opqrstu3D showcase; a pict says it all. That’s were Instagram does it’s thing. In no time, picts go all around the world, only hashtags needed. Opqrstu3D likes this. Follow us at Instagram. More picts, less words.

see you on instagram
see you on instagram

3D electricity II

In my last post, I promised new lights. Today opqrstu3D presents a new 12 volt light system for three LEDs. Printing a new hiding place for the constant voltage LED driver took some time, because I wanted it to be as small as possible. The first print was okay, but too big. I used it to power Three Bells

Next challenge, was to connect the driver to three separate ceiling lights. Here’s some problem solving needed. A small hiding place creates not enough space to distribute three hanging lights; they get far to close to each other. I needed three separate connections. Or, I had to design & print three isles, and that’s what I did. The biggest isle contains the driver, two satellite isles create enough space to connect three lights to one driver, hanging from the ceiling. Finally, opqrstu3D assembled these parts with wires, connectors, screws and some good luck. It was quite a job. This light system contains 16 printed parts, 3 pieces of loudspeaker wire, 10 connectors and 6 small copper screws. The pict says it all:

opqrstu light design © opqrstu 2016
opqrstu light design © opqrstu 2016


Introducing a first prototyped hiding place for the constant voltage LED driver. Opqrstu3D designed it a bit large to ensure it would fit for sure and it did. Next, it’s time to redesign it as small as possible. That’s why you need a prototype; it shows all ‘wrongs’. I can see and measure new and smaller dimensions and apply them to the next prototype: a perfect hiding for the LED driver. Without 3D printing this prototyping would not be possible without thousands of Euro’s! Meet a siamese triplet and it’s hidden LED driver: ThreeBells.

ThreeBells © opqrstu 2016
ThreeBells © opqrstu 2016