Tiny robot at printed 0.025mm - pics and a tip


#1

After discussion about the layering on my tiny robot printed at 0.05mm layer height, I said I would re-print at 0.025mm layer height and post pics. Here are those pics.

However, first things first – I have only attempted printing at 0.025mm layer height once before and it failed. I have seen other folks commenting they couldn’t get a good adhesion on the base, and therefore the whole print would remain in the resin. This is the same thing that happened to me. I forgot this when I went to print the robot at 0.025mm and sure enough it didn’t adhere but half-way through I caught it and I stopped it.

I wasn’t sure what to do, and I don’t recall if there was a solution on this forum, but I decided to see what would happen if I opted to print it at 0.025mm with the GRAY resin profile. I figured that with the colorant, it might need a slightly longer exposure time and this might help adhesion. I got it going and had to leave for a short day trip over to the beach with the wife.

When I got back – it worked! And it’s amazing. This is what you want, this is what you get. :slight_smile:

You can see a little bit of banding in the pics, but they are almost imperceptible to the naked eye. You may also notice he has a little bit of hair on his chest - he flipped over on the paper towel I was carrying him on and got a bit of lint. I haven’t re-cleaned him yet; I’ll do that after I remove the supports.

Cheers,

g.


#2

thank you!  It’s been helpful to see how much better the 25 micron works vs 50 on these small figures.

And thanks for the printing tip.


#3

I’ll add this here as it’s not worthy of it’s own post (IMO), but the prints look really cool in my wife’s UV exposure box.


#4

Very cool indeed; thanks again!


#5

Nice print! Can you show it with a common coin or ruler in the frame for scaling?


#6

Nevermind, just scrolled down and saw the other thread. Good stuff!


#7

Wow, that is a really cool robot!


#8

Nice tip regarding the Grey [Gray] Resin Profile.

Robot looks great in the UV pic.

_Too much BOKEH! _DOF obscures too much in the other pics.


#9

@Question - thanks, it was a quick 10 minute design in Blender… Some cubes and isospheres.

@Christopher - The good macro lens we have has a super-narrow DOF. We have another one that will be wider DOF, but not as macro. I will try both for future to give a better idea of size and overall quality.


#10

(in my best nerd voice)

@christopher    Bokeh is actuallythe character of defocused areas, not the amount of defocus.   For example, a defocused point can have a donut-shaped ring,  an evenly shaded disk, or a bright center that falls off to darkness.

(end nerd voice)


#11

@Aric

I’m aware of the subtilizes of the terms, I just like the way it sounds.


#12

:)  I thought you might, I’m glad I used my nerdy (Simpson’s comic book store guy) voice then!  :slight_smile:


#13

Hey guys!

We just launched a layer thickness article that I thought might be of some interest in comparing resolution:  http://support.formlabs.com/entries/24104448-When-to-Use-Different-Layer-Heights


#14

Thanks Jory B for this article ! :slight_smile: Is it possible to see the full size of the own picture ?


#15

My pleasure!

If we have a chance to get a macro shot, I’ll see if we can add it to the article