Another video jam packed with so much great information! And as always, presented concisely with excellent examples/visuals. I can’t wait to see what's next!
Great video. I found another way to make living hinges when working with PLA. Sometimes I can position the hinge so that I can print its layers as a different color. Instead of actually changing colors, I can switch to Flexible PLA of the same or complimentary color. The layers between the two types of PLA stick really well and the hinge bends better and lasts longer than regular PLA.
Bro, you are the man. Just wanted to say thanks. I don't have any projects that require this at the moment but I'm sure I will use it some time in the future.
At 4:06 how did you print that part vertically? How where you able to print it so that it would still turn and not stick together? Or is it just print and then break the layer interface between the rotating and static part? Or is there still a small gap to give it a bit of play?
I like my hinges just like my food: dead. Designing for living hinges is just much more complicated to get precise in many cases. But working with the material flexibility can make for nice and simple locking mechanisms.
would love to see a video about 3d printing threads and the different kinds of threads and how to get the tolerances to fit well even when using a not so accurate 3d printer
One thing you can do with the print in place hinges is angle everything at around 30-35 degrees. That way you get the best of both worlds with it not being as brittle as standing up, and not having that crunchiness from laying flat and having the bridges droop down. If you design the part right this way you can also eliminate the need for the moving parts to use each other as "supports" which again reduces the crunchiness.
We're doing a living hinge mechanism that NEEDS to be vertically printed (across layer lines) and thus far we were using just a straight level with a gap, but we've now addded those toothed grooves to hopefully spread the load out and make the force to bend that mechanism uniform across various user printers
Can you please provide a video on other common flextures that can be 3D printed besides living hinges? Those alone are awesome and great to know how to make but there's also stuff out there like crossbeams for locking pliers, and linear or angular platforms and carriages.
I just gotta say, your videos are the best modeling course out there! I just saw your other video about printing boxes diagonally and that made me think, would it ve possible to print a box diagonally if it has a print in place hinge? That would maybe fix the issue you described when printing it flat on the build plate "rotation due to saging" and would be a little stronger than printing it vertically. What do you think?
I like your idea of a hinge that rotates around a "hinge pin"" and is essentially 3 D printed as one piece - if I understood you right. I would like to incorporate that hinge design into something else. Are there instructions on how to create those "bolt like" mechanisms that rotate around the hinge pin?
When I print a two-layer strap from a bottom layer, the two layers kinda detatch and turns into a nice living hinge when I fold it. Living hinges don't just have one printing direction.
@@slant3d True. I like to make it so that the stubs actually meet in the middle so that there is minimal bridging being done. Each stub has an angle so the middle part of the shaft is actually a very small diameter. I've found I can get it to be incredibly strong to the point that the part that fails is the outer wall of the hinge even when the outer wall is several mm thick.
Absolutely. But since 3D Printing allows the creation of more complex geometries you can extend the life even further than the fatigue limits of any materials. PP is great. Printing it can make it even better.
At the end of this video a now we part ways pun was missing... 😂 I smoothed out the rotation action on a horizontal printed 'grown' hinge using a drill and an adjustable clamp to hold the center (safely away from hand). A little lubricant in the form of alcohol (dripped in and let the capillary action carry into the piece void) and some careful application of rpms. A little heat friction goes a long way. YMMV. And you have to work out how to attach it to your drill. I used a socket and and some museum wax/puddy clay in this one case. You don't need much. My hinge wast hex shaped. Tape would have been enough tbh. If it starts to smoke you've gone too far/fast/long. 😅 Again ymmv.
With that last example you can add a cam to it. If you use a hexagonal silhouette like he did here, or another simple polygon, just extrude one of the facets out into a rounded bulge, and make sure there's a lip where you need it to lock. When it crosses that lip, the bulge will have to squeeze past it with the user's help, but then it will be locked beyond that lip until he or she moves it back again. Depending on how closely you need it to lock to that point, or other details of your geometry, you can add more lips to one side or more cams to the other to get that functionality.
A really well-explained video. However, the spinning head in the background, coupled with the rapid-fire explanation, wore me out. This old codger needs a bit more time to absorb all of the talents demonstrated.
Old codger? You have hair, and it is not even gray... Anyway, as one old codger to another, I like the quick, concise discussion. If needed, I replay parts I didn't get at 75% speed, or in this case 25% speed for understanding how the part was printed on its side. My biggest issue is my hearing. I often replay parts where I didn't catch the words. (the "old codger" talk was meant with self deprecating humor directed at myself)
@@michaelj3971 Ha Ha...You've reminded me to CHANGE THAT PICTURE! At 83, I do have more gray than black! I spent many years speaking/selling on the phone and face to face. Some people speak quickly, some slowly. The most effective communication (for me ) is to match your speech to the subject's speech. Not easy to do online, though.
@@ytrichg99 You've aged a little since your last post! And at 69, I have also lost my old codger creds. I know what you mean about effective communication with different people. One of my adjunct responsibilities over the years was teaching technical courses. My son talks at about the same speed as the presenter in the Slant3D videos. It would be nice if my son had a speed control and replay capabilities like RU-vid...
@@michaelj3971 While I lived in the Midwest during much of my working career, I interfaced with my NY brethren much of the time. Their pace was often hard to match. I moved to TX in 1980. The true Texans thought I was too fast! Little did they know. Ha Ha
Why, why are you creating stress points in otherwise great hinges?? You start with a hinge with one stress point. Solely by making it of equal thickness you can achieve much better longevity. Ok, you got great idea and made a circular hinge. Why would you introduce a lot of stress points into it by those grooves?!
