3D Print for the Kids

I didn't use the 3D printer for a while since it actually broke down. I had some material stuck in the extruder and couldn't get it out. When I removed the print head I could push it out, but accidentally damaged the NTC resistor that measures the heads temperature, so I had to replace that as well. Well that is all done now. Another problem I had was that the material didn't stick well to the print bed. After reading and experimenting a lot I finally decided to stick blue 3M scotch tape to the bed and now it prints like a charm :)

But what to print then to test if it is working OK again. I decided it was time to print something for my kids. I have two daughters in the age of 11 and 13 so what to print for them. Well I did print a nice T-Rex puzzle for myself a while ago and back then I found some more of those so I started to look with them for something they would like. And we did find this very nice one. Here is a picture of all the parts and then look what you can make from that :)

A very nice butterfly. Actually it isn't as easy as it looks to put it together. Since the printer has some tolerance some parts don't with and you will have to use a knife to make the connections a but smoother and then still you need some force to put the parts together. The good side about this is that once it fits it won't fall apart easily. By now I have quite some colors of PLA print material on stock so they could choose their own colors.

As you might have guessed my oldest daughter wanted one in pink and the youngest in yellow. A nice project that took my mind of work for some time. I have been way too busy lately to be honest. Printing and building a butterfly like this is a whole day's work by the way. Of course you can do other things while printing, but still you have to keep an eye on the printer as well as somethings things go wrong. Here is a last picture of both of them together.

First Useful 3D print

Today I finished my first usefull 3D print. The machine you see on the left is our coffee machine. Once in a while it needs cleaning and then there is water coming from the two nozzles left and right. Since there is not much space and it is quite a lot of water coming out of it, my wife usually has to pay attention since she has to empty the stuff she used to put under there half way. But it always is a bit messy. So we came up with the idea to make custom made compartments to hold the water.

As you can see in the picture on the right this is quite a large object already for the printer. It also took about 20 hours to print each of them. I designed the whole thing in Cinema 4D by the way and then exported to STL format. It is really nice to be able to make something like this just from software I already know :) Yesterday we did the first cleaning cycle with them and it worked out really fine. So another project finished.

It might look easy by the way, but I can assure you that this project took a lot of time. I also had a misprint where the PLA on the role got tangled :( So after 15 hours of printing or so, I could start all over again. So far every time I walk away from a print, something goes wrong. So I now plan my prints when I'm at home the whole day. So yes... 3D printing is nice. But it is time consuming and you need to know what you are doing. I'm really looking in to a more professional printer now, to hopefully get better quality and less hassle. I'll keep you posted :)

Another 3D Print - Star Wars Tie Fighter

Last week suddenly I heard a noise and I saw the extruder of the 3D printer I build hanging on only one screw. I tried to fasten everything again, but I had no luck what so ever. So before I could do any more printing I had to take the whole extruder apart, fasten the screws a but more and put it back together. That was a little setback, but unfortunately it didn't end there. After that I had to recalibrate the head distance and I had no luck in that.

The material just didn't want to stick to the heated print bed anymore. I tried cleaning with alcohol, rubbing it a bit with sand paper like I did before, but no luck. Then I started looking on some forums for a solution and I found one. Painters tape! Very cheap stuff that you can just stick on the print bed and after that I printed like a charm. I guess by now you would have guessed from seeing the pictures of a print in progress.

The model I printed came from ThingiVerse and it is a tie fighter from Star Wars. I really like the look of that model. It consisted of three separate printable parts that you eventually have to glue together. But before I got to this point there was some more trouble. After the first print was finished, the material was stuck to the painters tape so well, that I couldn't get it off. I printed in PLA and that is quite fragile, so I could not use too much force since then the material would break.

So again I went to look for a solution and I found one. The tip was to use a spraycan with compressed air, put it up side down on purpose so that the stuff coming out is frozen. This cools the object to quickly that it shrinks a bit and pops loose. And guess what? It worked :) I will go and look now though for blue painters tape since they say this is less sticky. So that is worth the experiment. All in all the model is done and I really like it. But again I found out that printing on a DIY 3D printer is not so easy as it looks. Ah well most important thing. It still works. Up to the next project.