I am working through a video to learn to make threads. I have made it close to the end, and seem to be at a standstill. I have a bolt with a head and a nut nut with no threads. When I use Solid inspector on each individual piece they seem to pass inspection. Yet when I combine them there are nested instances. First I have yet to figure out what that is, then I need to learn how to find them and fix them.
In addition when I use the subtract tool, the video shows that each selection shows #1 for the first selection and and #2 for the second selection. There is no such information when I do the same process. Threaded Bolt with Head and Nut.skp (352.0 KB)
Doug, there are issues with your screw not being solid. I’m in the middle of cooking dinner but when I get done I’ll go over it.
Do you want the nut to screw onto the screw? If so, you don’t want to use the solid tools to cut the threads. You won’t be able to screw the parts together.
Is it OK that your screw threads are non-standard?
True, in SketchUp.
I don’t have a 3D printer but what I have read here tells me that most slicers are happy to print a collection of solid 3D parts as one so using the union function should not always be necessary.
This is true. For 3D printing as long as each of the individal groups or components are solids they can be left as separate entities and will still print.
I want a coarse thread much like the photo of the Red one. I can re-print the red ones. I just need them to be taller. The purpose is to be able to raise the board that has the shaper tape on it so it is level to what we want to cut/engrave. Things that are taller, like the bottom of a bowl or a thicker cutting board etc.
The pitch of the thread doesn’t matter. The two ends need to fit inside the holes (20mm) on the assembly table.
So there’s a wee bit of bad geometry in the screw. There’s a reversed face there but after fixing it, Solid Inspector (not Solid Inspector 2) indicates there’s still a problem.
Now, if you do want to use the screw to cut the threads in the nut, you need to either explode the top level group containing the threads and the head or you need to put the nut inside the group containing the two parts.
I was just following the steps in a video that had no intention of being detailed. He said at the beginning that he was just showing the concepts. It is an old video showing use of mostly native tools.
I have another couple that I will watch (I believe he gave you credit for some great advice.
How did you cut the point on the bottom of the screw? I think that’s the root of your problem. When I model your screw and cut the point, the thread runs out instead of dead-ending like yours.
How did I create the taper? The video said to create a cone at the origin (which is where the center of the bolt is) then drag it up until the bolt protrudes leaving a tip of the cone visible.
Then the instructions said to delete certain lines and edges.
It appears that my slicer likes what you sent. It is printing.
I will watch more videos and try to figure the process out.
