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hey everybody welcome back to rc with adam my name is adam and today i'm going to show you how to easily modify a 3d model to fit your specific need using tinkercad in this example i'll be modifying this gopro mount from dye aero mechanics that i got off of thingiverse to fit my source one quadcopter frame now the first thing we need to do is actually measure where the mounting holes need to be to fit on this quadcopter frame like many quadcopter frames the source one has four holes for screws in the front of the frame now i'll be using these to mount the gopro mount so we need to measure the distance between the screws and in this case these are actually the same distance apart about 30 millimeters and we'll also measure the distance between the two sets of screws so in this case it's about 41 millimeters but in some cases the distance between the holes side to side will be different for the front set and the back set either way i'm going to show you an easy way of translating these holes onto the new model once you've measured these distances write down a little diagram so that we can reference it later when we're making our modifications to the 3d model next you can go to thingiverse and download your model and then let's jump into tinkercad okay here we are in tinkercad now i'm assuming you kind of know your way around tinkercad some this is this won't be like a full in-depth tutorial into tinkercad but i'm going to bring you along and show you what i'm going to do the first thing we can do is we can go ahead and import our model select our file and import it okay now that we have our file in here we don't actually need to mess with it right now we can just kind of set it off to the side we do need to grab a ruler and drag it down to right about the center of our workspace it doesn't really matter if it's directly in the center now what we want to do is create four uh basically holes or four negative cylinders so i'm going to grab the negative cylinder i'm going to increase the sides up to 64 so it's nice and smooth and then what i'm going to do is i'm going to make the diameter 2.5 millimeters so it's very uh very skinny right there 2.5 millimeters just like that and then down at the bottom right hand corner and on the snap grid i'm going to change it to 0.1 so we have some good good precision there and now what i want to do is we're going to use the center of our ruler or the uh the the yeah the center point of the ruler sort of our the y-axis is going to be sort of going away from us and the x-axis is going to be left and right so this little three-lined circle right there that changes from the midpoint measurement to the endpoint measurement we are going to use midpoint so right now it's measuring the middle of that cylinder so now what we want to do is we can go ahead and zero it on the x-axis so i'll type in zero for that for that little box right there and now we want it to be half the distance um that it that it is between the two front we'll make this the front the two front holes so we'll go ahead and type in 15 which so it's it's nice and easy using pretty round numbers and since we're going to be printing this with tpu the exact you know whole spacing and hole size is not going to be that big of a deal because we'll have quite a bit of flex and also i would rather have these holes as far as the actual diameter i'd rather have it be a little bit smaller because it's a lot easier to make the hole larger after it's printed if if if necessary so we have one of those in place right now and so what we're going to do is uh to create the other uh the other hole i'm going to go up here and click the duplicate and repeat button right there and so now we have another duplicate right on top of that one and instead of uh instead of positive 15 on the x axis i'm going to change this to negative 15 and press enter or click somewhere else and then sha bam we have another one and we have 15 or we have 30 millimeters in between them because we have 15 millimeters from uh the center of the of the uh cylinder to the center line of our project now because uh this this particular uh whole spacing is symmetrical it's like a just a rectangle that's going to make this pretty easy because what we can actually do is we can actually select let's see let me click away let me click that one so we can actually select both of these these two because we know that the the rear uh the rear to the the rear pair of mounting holes um is going to be the same distance like a part uh like left and right so what we can do is duplicate both of these uh holes right here and then still using the midpoint measuring we can go over to this little box right here which is going to give us our basically our y-axis distance um and we can type in uh let's see 41 41 millimeters so what that's going to give us is 41 millimeters center to center so from the center of these uh of the from the center of the rear and again since it's a rectangle it doesn't quite matter whether it's the front or the back but we'll say from the center of the rear uh pair of mounting holes to the front pair of mounting holes is millimeters so that's pretty darn easy really um and if you have uh if you have some like say if these two were actually you know the distance between them was actually like 20 millimeters you could just type in 20 and you would you would uh you could easily oops those got changed somehow how'd that happen oh i must have hit the wrong thing but if you have uh if you have some other uh sized pairs and it's not a rectangle then it's pretty easy to make those adjustments this way so now what we can do what's going to make this really easy to to incorporate this into our model here is we can select all of them you can either click on each one or just drag over uh click click and drag uh to select all of them and then up in the right hand corner we're going to click group or control g like that so now all of these are grouped together so you click on one and you move everything so now what we can do is actually um now that we're still using the uh the center point and that's giving us the center of all of these like of of the entire footprint of of all four of these um cylinders here so what we can do is just center this out by these these green green shaded lines that tells you how far the center point is from the center of our ruler so we can click 0 or type 0 we don't want to mess with the vertical green line because that doesn't really matter right now and then for the on the x-axis i wish it was actually labeled x-axis but i guess it's not but i'm calling it the x-axis we're gonna type in zero press enter or click away and boom there we go so that's on the center so now what we can do is get our model you could drag this to wherever you want it to match up or we can center the model that we're using uh in the same way and center it in the the sort of the centered right along with our negative cylinders when i say negative i just mean uh basically like what's going to happen when we add these or when we group them when we hit the group tool when you add the negative shape
Thanks for your comment Johnie Mccane, have a nice day.
- Enoch Nathoo, Staff Member
alright what's up YouTube today we're gonna talk about how to easily manipulate modify add to and subtract from STL files that you obtain on the Internet this is in reference to making remixes on Thingiverse or just modifying previously designed STL's in CAD program to make your life a little bit easier so if that's something you're into go ahead and stick around all right so I'm in the Tinkercad environment it's a little bit different it's a tinkerer block setup it's a visual type thing it's provided for free from Autodesk you can go to Tinkercad comm get a username and password for free free software this isn't gonna be as complex as something like a non shape AutoCAD fusion 360 anything like that but what it is good for is for visual people and I'm a visual person so basically what you do is you add and subtract from this workplane environment and Tinkercad just kind of doing it visually not really off of pure specific measurements it works really great for beginners and for me it works really well for just easily adding subtracting or modifying STL files so a little disclaimer here obviously STL files are someone's intellectual property if they have marked it as a copyright don't use it and modify it and use it as your own I mean just common sense guys like be a good person it's very simple okay so let's say I found an STL so for example we use one of mine it found an STL I brought it into the Tinkercad using import and then just bring in STL file and for some reason it's all grouped up because the person that made it wanted you to print it that way or whatever but you want to modify it a little bit and it comes in grouped in four pieces like this one this right so now after we import it into Tinkercad it just becomes another object so this is just technically another object and we can modify it however we want we can't ungroup it right because to Tinkercad this is all one large object it's like a block or a cylinder that you added into the program but what we can do is let's say we wanted to isolate just this cut portion of this STL so what I'm going to do is control V I'm going to duplicate it all right I'm duplicating it in place so right now there's one over another so there's two versions of this thing on the work plane so if I bring this down you can see that I'll change the color see there's two of those now because I didn't control B and duplicated in place so let's say I just wanted this circle what we have to do then is we have to come in in in here and just cut out everything but the circle so what I'm using here is a block that is selected as a hole and that hole means it'll cut anything that it touches I'm just going to go in here a little bit carefully make sure it doesn't touch the thing we want I'm gonna go in here make sure that it doesn't influence this Cup at all and that would show up as a dark area on the cup if it was actually hitting the cup so I'm gonna come down hold on here I'll move my head around but right here is the snap grid area and I can click this I can turn this off and that gives me very fine resolution on where I can be or where I can move this arrow so large small it gives me what is that a tenth of a millimeter movement instead of or actually that gives me a 1/100 movement of a millimeter instead of this high or low resolution snapping to the build plate which is one millimeter so I'm going to turn that off I'll put my head back here in the corner then I'm gonna move this in and out until I don't see any gray see how that turns gray that means that's intersecting with that shape and I want to preserve my cup so I'm gonna bring that away from the cup and making sure that I get over this part without touching the cup oh and I don't know if I'm gonna be able to do it I don't know if I can do it oh that's gonna be a big pain well that's good it's a tutorial so I'm just gonna take this square and I'm just gonna move it at a slight angle and I'll put it like that then it gets rid of that and doesn't touch the cup and then I'm just gonna control D the square or rectangle I guess it would be and then I want to bring it like this and like that so now I have it down to the base of the workplane all the way up to the top and what I'm gonna do here is I'm going to select them all I just clicked and dragged the mouse so selected everything I'm gonna group those and there we go okay come on go back there we go okay so now that I have everything together here and I have the blocks cutting away the portions that I don't want I'm going to go in and I'm going to duplicate with a control D so now I have two sets of everything except the portions that are going to cut away so now I'm going to select everything in there and I'm going to do a shift and select the cup now I'm going to group so that's getting away that's taking away one set of these peripherals around the cup so now we can go in and remove the duplicate of the whole STL file and what we're left with is just a free-standing cup with no peripherals okay so that's how you separate them apart so now let's say I just wanted to have this one peripheral on this this STL file well it's the same exact process that we just did I'm going to take it I'm just going to duplicate it I don't have to duplicate it in place for this one but I'll keep this TL over here and then all we're gonna do again is take the square or a rectangle we're gonna remove everything we don't want just using a series of of rectangles cubes as it were and then we're just gonna group that again so that gets rid of everything but this right then he can go on so forth on and on and on so then adding and subtracting to these is at this point now this individual cup is just a basic object as if it were in Tinkercad so as if you created it yourself so let's say we wanted to maybe have this be some sort of cup holder that you could get something out of I don't really know but let's just put a circular cutout in the front so it's the same principle here as it is with any other Tinkercad object you come up with what you want it to look like in your head so let's just say I don't know something like that maybe a little thinner and we'll align them with the line tool so I know it's centered I like this a whole I'll group these two and now it's got to cut out so I could grab something out of that container or something if I wanted so this is the same with adding to this individual container no big deal just throw it whatever you would want to add to it and then what I do when I when I try and add things that are thin like an outer perimeter thin outer perimeter what I like to do is slow down because it's a tutorial what I like to do is I take this object I want the outer perimeter to go I duplicate that send this one out I make this a hole and I take this piece I'm going to add to it and I move it in to the hole version to the cutout version of the the thing I want to add that to you you can put this one then in there or have the duplicate separate and group it but I'm just going to do this to make it easier to understand I'm gonna group that now I have that curve that I know will be the curve for
Thanks Ernestina your participation is very much appreciated
- Enoch Nathoo
About the author
I've studied quantum gravity at Bennington College in Bennington and I am an expert in architectural sociology. I usually feel ashamed. My previous job was bindery machine tender I held this position for 28 years, I love talking about ephemera collecting and taxidermy. Huge fan of Perrie Edwards I practice cycling: road and collect records.
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