let's take blender 3d print design to the next level and create a print in place a geared
fidget toy so here we go i have 10 minutes on the clock i will be surprised if i do this in 10 but
i'm gonna go my full speed three two one go right so i already have an idea of what i'm going to be
creating here and i'm going to be using the power of precision gear so if you want to find out more
about that it's all going to be linked down in the description so let's just go here let's make
this fit to the gear that i'm wanting to i'm going to start with 15. i'm going to go for the module
of 3 a height of 15 sounds good to me i want to be the shift of 0 clearance let's go with a
helix angle i'm going to go pretty hard on this i'm going to go with 45 let's do an undercut
and turn that into a herringbone but i'm not too happy with these sharp corners here so i'm going
to actually add a tooth modification as well let's go for a tip relief i think that 0.9 is what works
nice at this one yeah and then i'm gonna go with a relief of let's say five so here we have it
that is some pretty decent mesh that's going on there okay now let's add a borehole in there so
let's go down boar here we have it let's make that a polygon let's set the resolution to 100 let's
go with what what's the minimum i want to go with 12 is that about what i want yeah 12 because then
that makes it nice and 24 that lets me have my finger my thumb in there more than anything okay
now that we have that in place there let's create the other one so shift d on the y pull that out
here i'm going to do the helix angle this time on the minus so minus 45 and let's increase the teeth
to 20 so it's something nice and big and let's also go to the hole here let's make this what
22 is that 22 is a bit too much maybe i think that's i think that's all right actually yeah i'm
quite happy with that maybe i'll go with the 21 instead um yeah okay now that we've done that
let's just take a look here i am working on a way that's this is going to work procedurally
so we don't have to sort of do this by eye but for now let's just go do this by eye like that
now when it comes to the tolerances i'm going to have an entire video of tolerances again linked in
the description but i'm going to make this a nice big tolerance of 0.6 so that this will work on
anybody's 3d printer okay now that we have that in place and i'm quite happy with how these gears
are going to turn out it's time to do a little bit of finessing to these gears i'm going to take this
into edit mode i'm going to do a circle selection of all of this center vertices right here because
one of the caveats is right this minute those are not joining correctly so i'm going to just create
a vertex group in that vertex group assign that deselect it select it to double check it brilliant
now that i've done that i'm going to go and add a modifier another weld modifier to the vertex
group that i just did so you can see what exactly is going to happen here you can see those aren't
joined up so that vertex group connected i think it was 0.3 should connect those up nope maybe 0.4
nope 0.5 surely that will connect that up why is that not connecting those up oh wait
i'm silly there we go so maybe 0.3 did connect that up so 0.3 yeah that is much better
um i might be able to get away with less but i'm going to stay with that because time is tight
so let's go and do the same with the other one here we'll do x-ray circle selection increase
our selection circle to all of that there create that vertex group here assign that
deselect it select it to double check it go back out go and get that weld modifier going
here over to that vertex group let's go 0.3 gonna go with connected quickly check that and
edit make sure that we turn on edit mode checking and i think that looks pretty clean to me indeed
and the best way to do this is to just apply these and test it so let's apply that there go in here
face selection said yep that works perfectly go over to this one apply this one here into
edit mode check by selecting that one that works perfectly okay now i'm going to add
a loop cut down in here and now because that's already selected i'm going to go and remove that
from here so now with that removed again we're going to deselect everything and then select it
to double check it that's working good there and the reason why i'm doing this is i'm about to add
a bevel so let's do that once again we've got a loop cut right there we're going to
then go to the vertex group here we're going to remove that there a a to deselect selected up
that's looking good perfect so that means i can now go into here and add a bevel modifier and
use the vertex group once again let's aim for what four i think is a good one we'll go here it's four
too much probably is let's go for three then okay now that we have that there let's do the same to
this one here so we'll add that bevel assign that to the vertex group we're gonna go this vertex
group here go by three i think that is as good as we're going to get right now i might actually make
this one four and if that's going to be for yeah i think that works much better that looks good right
there okay so we've got that there that there i'm happy with that so i'm going to sort of just
bake this all down so i'm applying all that there i'm applying all that there we're going to now
select both of these go into edit mode here go face selection loop selection of all these
faces now so all of this here i missed one face there and loop selection there press shift d and
then going to be parting by selection brilliant so now i have these things right here so here
i'm going to quickly set that rotation back to the zero there select these both of them that and that
into edit mode select it all up and i'm going to do alt s and i'm doing the 3d printing offset at
this point which i'm going to go for 0.5 i think and make sure that i hit s so up at the top its
even thickness now that i've done that let's press shift d to duplicate that alt s s once
again for even thickness i'm going to go with two millimeters this time and that is good right
there let's go edge selection now and i'm going to select all this edge all that edge i have my
quick menu with bridge edge groups remember that is underneath the edge menu right there and then
i'm going to go and select this one select this one bridge edge loops there and we'll do the same
over here so bridge this and there so cube bridge edge loops and once again we've got this one here
and that one there cube bridge edge loops that's all good let's quickly check our normals there
look it's gone red in there so that's not quite right select everything shift n okay normals are
sorted that is sorted but that is not very printed in place so let's sort that out so let's bring in
a plane make that plane nice and big i'm gonna go for 150 move this g over to there yep edit mode
extrude that by 10 in the other direction selected all shift end to make those work properly now and
let's go into our quick selection not quick selection snapping menu there because we're
wanting to snap this to there brilliant okay so now that we've done that there let's select this
select that go oh let's join these two up into one object so ctrl j you you control shift minus
you have now been cut up and that is good now there's a little bit of a caveat here
which is when it comes to print in place you don't want to start an angle and start an angle i don't
know why it just doesn't work so what we've got to do is a little bit of extra little work here
and you know what i'm going to actually do that before that lovely little cut that we did here
wait let me just bring back everything yes that cube is there brilliant so i can go into here
local view these and this is why because i want to basically grab these i'm going to grab this face
this face i'm going to extrude those down and then i'm going to loop select this loop select that go
gz one upwards and now that we've done that we can do our loop our loop cut our boolean here
does that boolean there and now we have to select both of our gears here and we have to local view
these take these into edit mode and we have to sort this out here so we're going to select all of
those faces there select all of those faces there then i want to extrude these up by one millimeter
now that's going to create some broken geometry right here so we have to select the edge loop
here we have to select the edge loop oop not that one but this one here a little bit of
accurate selection jonathan please we do not need that there yeah g z we're gonna go by two bring
that up to there that is looking good just for the sake of it i'm gonna select it all press shift
n just to make sure everything is good so that is that now we have to join these two together i only
have 40 seconds left i don't know if i'm going to be able to do it so let's see i'm going to select
all of that select all of that extrude this up and i've screwed that up i think so z0 oh z on
the zero brilliant and now i'm going to bring this down so g z down to right there selected all merge
by distance now i just need to select some faces quickly select those faces there and
we're going to select these faces here go bridge edge loops oh i'm not going to get this in time
uh i need to go with edge edge press j on that oh this is oh not there but i'm so close
so let's just quickly sort out what i've got to do correctly here so if i undo that i have that
selected what it is is an x a limited dissolve to simplify that down right there now once that's
been simplified down i just need to select the edges right here so we'll dissolve that edge here
then we can do a vertex selection between these and define that with a j and that should do it
oh there's an extra edge right there that shouldn't be there so let's dissolve that
edge that's how it should be now i can select those two right there join that with a j let's
just quickly just for the sake of seeing things properly that's local view this here then let's
take it into edit mode so there we have it and this is almost almost okay but not quite so let's
limit it dissolve there and let's limit dissolve that right here that is correct but this
shouldn't really be here i don't think we need this geometry here we don't need u right there
but what we do need is an edge between both of you there and we go that so from here there to there
we're gonna go j that is it that is it completely so i'm just going to select you we don't need u
let's select everything merge by distance set that to a decent 0.1 i think would be maybe a little
bit too much but i'm going to do it because like that removes 65 and i have a feeling that's right
along there so that there if we go out is our lovely 3d print in place gears done that quickly
so let's quickly do a 3d print check as we should always do so here we have it 3d print we're going
to check this one here that is looking all good we have some non-flat faces but that's totally
fine i'm sure it's talking about these right here and let's see this gear right here and that gear
is perfect there's a couple of thin faces i can expect why that would be and also here let's do a
nice little check that is all perfectly ready for 3d printing let's go and chuck this into a slicer
quickly and then get it printed so let's go file export stl and here we have it in prusa slicer
it looks like it's going to print out absolutely perfectly so let's go and set this off to print
and there you have it i'm really loving the design i didn't realize i would enjoy
this fidget thing so much there is one little thing though a little bit too much give for my
liking so i took this back into blender i selected these faces right here and extruded them out by
about a millimeter and a half and then i reprinted it here has a much less of a give and it still
spins just as great now the key thing for this to spin so fluidly like that is by using a little bit
of silicone grease and then just work at it and then eventually it just goes perfectly now i did
use precision gears my add-on to do this and you can just get the free version and do this with
spur gears now i do have a spur gear one right here but this does have undercuts on it and that
is part of the full precision gear set now i am planning to add a whole bunch more to precision
gears including timing belts and much more the next update is going to be doing rigging so
you'll actually be able to animate this in blender really quickly and easily but yeah just letting
you know about that so if you found this way too overwhelming and there's too much information
you might have thought that i was using custom shortcuts or something else don't worry all of
this is explained through my entire free course down in the description or if you're wanting to
learn blender for 3d printing through 3d printing projects i also have a paid course that is linked
down in the description that is a very quick start kickstart guide that will get you making things
in blender for 3d printing in no time a huge thank you to my patrons you guys are absolutely awesome
and without you i would have not been able to make maker tales really means the world to me
and a huge thank you to my vip maker Can Ozkaynack if you like what i'm doing here you think i'm worthy
of your support i would love to see you there too and don't forget that we have a discord and that
is linked down in the description thank you for watching keep making and let the quest continue
i wonder how fast i can make something like this go