14

Here is Modifier version you asked for ... ... add a Circle 6 sided, extrude E, scale S - to create a segment with a hole Array - use two of them to create like "rhombus" shape Mirror X and Y - mirroring does some parts overlapping, but no problem ... Weld is used to merge double vertices Big thanks and credit goes to @Robin Betts. He added two ...


13

I don't know if this method will appeal to your precision requirement, but believe that, with care, the accuracy will be as good as that achieved by a boolean, especially if you take into account the topological anomalies that a boolean could introduce. A (Edge Menu) subdivided fan-filled 6-sided circle automatically gives you a hexagonal grid. It is at this ...


13

AFAIK, CAD software and blender are not that different, especially for 3D printing. The main difference would be operation, and maybe some tools to make sure the object could be made with a mold. Just do some checks: Make sure the geometry is watertight, commonly referred to as being manifold. You don’t want any holes! Double check that all the normals are ...


9

Zargul is correct about what is needed for the model. There is more to it than just making sure a model is manifold. A molded product must meet certain restrictions of not having deep recesses that may keep the product from releasing from the mold. Save out an STL file and send it to the mold manufacturer. They will be able to tell you if your model meets ...


7

There are two kinds of 3D file formats in common usage: Mesh formats: The model consists of flat triangles or polygons. This is the native format of Blender, and can be exported as .STL which is widely supported. Surface formats: The model consists of curved NURBS surfaces. This is the format preferred by CAD applications, as it gives better precision and ...


6

If you want to have a live control as with the array modifier, you could try using an instancer: SHIFT + A, then M, then Y for a new cylinder. SHIFT + A, then M, then R for a new circle - set vertices to 6 and radius to 2 m. In Instancing choose Vertices. Select the cylinder, then the circle, press SHIFT + P then ENTER Press ALT + Z for X-ray mode. ...


6

Figures with a recurrent shape that pivots around a center are easily generated with the spin tool in the edit mode of the 3D viewport. However, since it seems like you might benefit from "editability" of the shape I would suggest a different approach. Mirror a cube and model a single gear tooth. Add an Array modifier to the object. Set its count ...


5

First of all, I believe the question was migrated wrongfully, but let me clarify some: What is an overhang? An overhang does not exist in a model per se. Overhangs only exist in the print, and areas that will become overhangs are pointed out only by slicing software. But now, what is an overhang? Overhangs are parts of a printed model that are not supported ...


5

Bisect Tool If you need precise adjustment - open tool properties (left-bottom at 3D viewport editor) and set cut numerically. For 3D print you would need to have a mesh as manifold, so check Fill option. After Bisect operation, when cut edges are selected search for Edge Split to separate a half. With mouse cursor close to an one half click L to select ...


5

We want to create an Archimedes spiral curve 155mm long. The dialog to create Archimedes curves has three relevant parameters: (number of) Turns, Radius Growth, and Radius. This problem is under constrained, meaning there are an infinite number of values for these three parameters that will give us the spiral. We will need to pick two, then calculate the ...


4

Bridge Edge Loops is Blender's lofting tool, with a reasonable range of options. One way to capture the curvature: Rotate a duplicate of the top edge of your sole-rim upwards, towards the top profile of the shoe. If you have an actual front elevation of the shoe to work to, for the profile edge, so much the better. (You could create a curve for that, ...


3

Select your base cylinder, name it Base and add a custom property (make sure to add it for the object and not mesh): Name it distance and make sure to click the blue button: Now you can go to the Scripting tab, and paste the following script: import bpy, math rings = 5 D = bpy.data objs = D.objects name_template = 'Generated.Cylinder.{}.{}' # ring ...


3

Press the edit button next to file at the top left of your screen, go to preferences, select add-ons, look up the auto mirror addon. Enable the auto mirror addon. In your object viewport window, in the sidebar, select edit, at the bottom there should be a dropdown menu for the auto mirror addon. Select your model, decide which axes you wish to cut across. ...


3

You don't give enough details, but you could begin with a 28 vertex circle: Extrude inwards if you want the inner circle that we can see on your photo. For the star shape itself, checker deselect to only select 14 of the 28 vertices: Scale up or down: Select all and bevel the vertices as much as you want: Extrude up: Extrude and scale inwards with a ...


3

You can avoid using a boolean modifier. Say your cylinder is made with 32 steps and you want the coil 8 turns (if not the case adjust the values to your need). Start keeping 1/8 of the cylinder: Bevel (or not as it depends on the size you want) the center loop: Adjust the center part to make a crease: Rip the bottom: Rotate 1/8 = 45° the bottom part and ...


3

In addition you can activate the "3d-print toolbox" in the plugin section to get some information about your model. As it is not clear what type of model and what specification for production would be needed its difficult to give proper feedback. Blender is not CAD software which uses primarely nurbs, as those have perfect surface information and ...


3

For 3D printing meshes are fine. But 3d printing is not exactly mass production ready.** However, if you need your object made with a CNC machine like say you need aluminum or steel injection molds made then the CAM operator is not going to be happy with a mesh. Why because its really problematic for the path planning to have a angular surface*. So be ...


3

I'm a lazy person, so I'd let Blender do most of the work. Add a UV sphere and rotate it 90° Remove unnecessary faces Tweak, extrude, subdivide...


3

There are at least 2 ways, the Displace modifier or the Sculpt mode. You could find a black and white floral repeatable pattern, blur it a bit: Then create your object, subdivide it a bit, give it a Displace modifier with the floral pattern as texture (If you've unwrapped your object you can choose Coordinates > UV), give it 2 Subdivision Surface ...


3

As you have V angles, you should not have modeled rectangular angles in the first place, it's better to first follow the whole shape: Extrude: Give it a Solidify modifier (Complex mode to give it even thickness): Apply the modifier, round the angles with bevel operations: Correct the topology with the knife (K to activate, Z to cut through), dissolve ...


3

This is very similar to this question, but the method is a tiny bit different. Instead of setting only the weak part as your vertex group. Set every vertex of your model at 0.5 weight for instance and set the weak spot at 1. Then when you set the vertex group in the solidify modifier, the weak part will get 2 times more thick than the rest of the mesh. The ...


3

A subdiv. modelling approach would aim for clean topology from the outset. It may be a bit more trouble.. I guess it's a weigh-up, considering the final resolution of your printed surface. For this method, retain an intact, subdivided copy of the torus. You can hide it; it's going to be a shrinkwrap target. Here, I've worked on 1/4 of the torus, with the ...


3

Specifically for this kind of object modifiers served quite well too. It is non-destructive way ... but yes, setup is very fragile :) So it is still recommended to use Robin's proper way, but can be useful as WIP. Based on default Torus and several Cylinders (8sided). Usually Subdivision modifier fails on boolean operations, but since topo quite matched, I ...


3

An alternative using not convex (concave) edges. Some methods to consider Similarly to How to select concave quads , bmesh edges have an is_convex property. Of the opinion for a vert to be a local minima, at least one (probably two) of its linked edges will be convex. Running for e in bm.edges: e.select_set(not e.is_convex) on test file Normal of ...


3

Yes ! you need to use shrinkwrap method of curse You need to join you dividing plane to your mesh : then you need to project your surface with desire amount of resolution and apply everything then you can select flat (extra faces) by select > linked > linked flat faces and remove remaining dividing faces . and choose open edges by double click ( or ...


3

you could try this: go in edit mode and side view of your model: Select a good amount of bottom vertices with box select and x-ray mode on: now press E to extrude and Z Z (yes two times to extrude in z direction) now add a box which is just a big as you want and it should only include the vertices you just extruded like this: give it a boolean modifier ...


2

here some steps to create this: add a plane rotate, and select the face and press x and select only faces, then scale in the x and z axis to get a rectangle, and press shift+s and select snap to cursor offset, the cursor has to be placed in the scene`s origin, then move all the edges to the cylinder created to the x axis, and then use the shear tool to ...


2

Firstly I think you have your terminology backwards. non manifold is bad, manifold is good. It looks to me that you are trying to attach a bolt head to a cylinder. The problem with using bridge edge loops to do this is that the cylinder has empty space on the inside while the nut does not. this means that you are asking the printer to print faces with 0 ...


2

It's a curious model. I have 2.83 and the file opened fine, no obvious problems. Export to STL appeared to go well. Meshmixer is also happy with the structure. The model appears to export at 0.11 mm diameter. My first move was to increase scale to 2540, a common number for inches to millimeter or the reverse, I can't recall. Still too tiny, but when using a ...


2

Before exporting, press A in object mode to select everything, this won't select any hidden object. Then while exporting, check "Selection Only" on the right to export only the selected objects.


Only top voted, non community-wiki answers of a minimum length are eligible