3D printing: things to know

3D printing

What do you need to know about 3D printing? For some time now, I am the proud owner of a 3D printer.

One of the ones that is built from A to Z (DIY – Do it Youself ), not the one that are already built and or just put a filament and a file to print, and hop, let's go!

Since I'm being asked a lot of questions about these 3D printers and 3D printing, I thought I'd write an article with the most frequently asked questions and their answers.

Questions / Answers about 3D printing

Why a DIY printer?

There are 2 advantages to taking a printer to assemble yourself

:1. it is cheaper
2. by amounting it yourself, you learn a lot about how your 3D printer works, which will then allow you to easily detect problems, easily replace parts, etc. In short, you will
master a 3D printer much easier by mounting it yourself, than by taking an already climb edit and you would not be what to do in case of a probl

emIt has on the other hand disadvantages:
1. need time
2. it sometimes requires reflection
3. it takes a lot of patience
.4 It requires perseverance

Does it take long to get yourself a 3D printer?

Yes and No. Personally, taking my time, reading of the instructions in order not to lose me, I got 1 day and 2 afternoon. With experience, I think I can easily go down this time in 1 day if necessary or even less, for any printer of the same type.
Update: Now there are large-part printers already assembled for shipping or you just need to assemble 2-3 set of parts and tighten a few screws, which is done very quickly.

Is 3D printing complicated?

Using a 3D printer isn't really complicated, it's just that there are a lot of parameters to consider. Besides, there is a golden rule: make one change at a time! And so

metimes it's tedious, especially when you have to calibrate the 3D printer. Well Yes, the 3D printer requires a calibration, but once made, 3/4 of the calibrations will no longer need to be redone. If I say 3/4, it is because according to 3D printers, sometimes you will have to recalibrate from time to time certain things, like the distance between the bed (base) and the print

head. And unfortunately, these calibrations are quite thorough, you should know that the printer comes out of the wires in the range of 0.1 to 0.4 mm in general! This means that a calibration with a millimeter of deviation from the expected value can be a problem!

How much is a 3D printer?

Well it depends on, I'll say it's a bit like smartphones: you have 100-150 euros 3D printers, and those 1000 euros or more. (I refer of course to the domestic printers, because there are far more expensive). 3D printers are starting to become more democratic, so gradually the price will go down, I think.

Note that a 3D printer requires (generally plastic, PLA or ABS), filament just like any printer inkjet ink needs. The price of these filaments depend on their quality, colour, their properties (flexible for example), etc… But in General, for example, for the classic PLA, all confused colours, I'd turn around 20-25 euros per kilo. (As with everything, you have the cheapest and most expensive, sometimes double the price!) But you should know that for 1 kilo of filament, you are quiet for a good time! 1kg represents about 330 meters of filament with a large ladle.

An improved/upgradeable 3D printer?

I often read some advised such or such printer because it can get better and that there is a community behind. Don't focus on it, a community behind is important, that there is not to say, however, the improvements…

The improvements you are offered, these are improvements that you can print with your 3D printer. Isn't this wonderful? Nothing you can do with your printer, auto-améliorer it! Yes… except that improve it, to first that she can run a minimum! It's just

stupid, but it is logical and many people forget it! I also had the case with my 1st printer technical service, I had a problem on one of axis, they gave me as solution to print a piece of clear to see if this resolved the worries… Well yes ok, except how I do if my printer does not want to move because of the problem on t

his axis?! If you print a part to improve your printer because it doesn't print well, how do you want that part you're going to print to improve the printer when it's not well built?! (After all depends on the size of the problem and the importance of the play) In addi

tion, any improvement is not necessarily necessary. Not all printers are the same, let alone configuration. You will alm

ost always be given 2 improvements to implement: the anti-wobble (a kind of vertical waves that are created) and the ventilation to be added to cool your room. Many have demonstrated their usefulness, and I believe them, but home, tests showed that my printer is 2 improvements were not really necessary and for one of them, instead printing empire!

I3 here and Prusa, Prusa i3 there… Very well known, large community, do I have to take one?

Bad idea if you find a lot of resources on the net about this printer! Prusa i3 is th

e name of the printer model open source created by Joseph Prusa. It is, I say, and if I'm not mistaken, one of the pioneer of the democratization of 3D printers domestic. So basically, a good portion of domestic 3D printers have been inspired of this i3 Prusa.

The i3 prusa became so well known, that even if a 3D printer no longer has a piece of this i3 Prusa, the company will still call it Prusa i3. It's become a commercial term, kind of like a synonym for "3D printer with square tray" (Yes, there are printers with round trays) so d

on't rely on the prusa i3 term in the name of your 3D printer model (unless you opt for the original ale!). Prusa i3 of a mark will be all to is different from a Prusa i3 of another brand

! I think there are as many model named Prusa i3 that of screws and parts that include a 3D printer…

Does 3D printing require a good knowledge of English?

Home 3D printing technology is recent, so it is quite normal that the majority of the resources are in English. You will more easily find solutions to your problems in English and in french.

Do you have to invest a lot of time?

To assemble a 3D printer? No big deal, you can buy a whole uphill one, but it will usually cost you more, although prices are starting to go down.

For impressions, once it is launched, except to monitor it from time to time as everything goes well, it will do the job on its own.

I'm launching my 3D print and I'm going to sleep/at the market/… ?

Bad idea! It is quite dangerous to leave a 3D printer unattended!

1. First and most importantly: it can catch fire! The h
eated head heats up to about 200 degrees continuously, but hey, except for the plastic it melts, it should theoretically not touch anything else. On the other hand, your wires can heat up, your engines heat up and your

card burn! And believe me, the risk of setting your home on fire is not zero! I had the bad experience of having (presumably) a blocked fan (2 times!), these are the mini fan, 4cm sideways. It's not much, it's tiny and it consumes very little. 1h after, white smoke and the cable completely burned! The wire has heated up so much that it has cut in 2! Luckily I was next door and Saw it, because it was a fan that cooled the motherboard, so it was starting to heat up too! Also, fortunately my cables were scattered and high, and so it didn't affect anything else, but it's easy to imagine that the heat from this overheated wire could have set something on fire and the fire spreads! Mine of nothing, it still burned the sheath that wrapped the wire!

2. Second, less important than the fire for some reason X, Y or Z, printing may very well start, but in the Middle, printing fails a check mark, and hop, your impression is completely screwed! If you're in the vicinity and that you look at from time to time, you will see it and stop printing, or set the worries. But if you're not there, the 3D printer will continue as if nothing was, except when there is a temperature problem, and will continue to move his head and out of the filament. In the end, you will have a beautiful ball of useless plastic.

Can we make a break?

Yes and No. Breaks on current 3D prints is possible but can cause problems on the part: the head heats continuously and as long as the head is at the right temperature, the filament will come out… which will damage your impression because filament would have settled where it was not n

ecessary! A break with your head outside the print area? Yes, possible, but depending on the duration of the break, your print will cool down, and the cooler your room, the more you will see a difference between the front area and the area after the break because instead of a fusion between 2 hot layers, it will become a fusion between a cold layer and a warm layer.

Plastic, dangerous to health?

The PLA and the ABS, are not toxic. But the heating of these materials cause of many fine particles which are dangerous to health. So much so that some advise to put a hood especially if working with ABS! The PLA is less fine particles than the ABS.

This health hazard is little known and is not listed in the instructions (can we really call it a record?) It is usually manufactured in China, you don't really have what can be called a record, you rather sheets stapled as a notice) because of the youth of 3D printers in the houses. and is not really regulated.

It's a bit like smartphones, that them I would say, are older than the 3D printers and more present in our daily lives, but it is still unclear if they can cause cancer or not, if they heat up the brain, an egg etc… There's still a couple of years, was not at all of the standard DAS, which is the specific radiation absorption rate, it is only now that we made a little attention.

2 print heads, print twice faster?

There are 2 heads 3D printers or more in order to manage more easily 2 colors or 2 different materials. -What does it faster? Yes and no, because 2 heads are on a same axes and therefore move at the same time. If you print 2 towers at the same time and the 2 towers are separated by the same distance that the 2 heads, you win no doubt time if he had done the 2 towers with a single head. But if you print a single piece or your 2 pieces are at a different distance than the distance between the two heads, the time saving is much

less! The double extruders are there mainly to print 2 colors or 2 different materials, not for a saving of printing time.

How long does a 3D print last?

It depends on a lot of factors! This varies very strongly depending on the parameters: for a specific model, depending on the machine and the parameters, it can go from simple t

o triple or even more! In general, consider that it will take hours to print a few things! Of course you can print objects in 5-10min, but they will usually be very small. For parts of 1-2 cm high with a certain design, consider minimum 30 min.

For larger pieces, more complicated, requiring more strength, etc… hours and even in some cases days!!!

And lo and behold, if you have any other questions, don't hesitate, I'll try to answer them as best I can!

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