My guess was that it would fail at the narrowest point of the tpu strap, either at the the point where it connects to itself or at the pin. This test shows just how tough tpu is... Awesome vid FPF!
This felt like a super-sized episode and I loved every minute of it. The bonus of the Switch was nice, even though I’m past my EotS days and don’t have a laser. Seasons Greetings to you and Mrs. FPF! 🎄🎅🤶
Wow, that was amazing.. I thought it would separate where the tpu goes through the slot in the strap or at 60lbs. I have so many ideas for this. GREAT WORK keep it up
Oh Man! As I watched the progression of the video, I was so hoping that once you reached the final design, that you were also going to include a version of the TPU strap with a straight end, for those, including myself, putting stockings on the horizontal sections of railing. I was so close to FPF providing the long sought after perfect Christmas Stocking Hanger Solution that I've been searching for! Great Design, just can't use it in my application. Thanks FPF for all the work you put into your videos, even though most designs aren't anything I can use, I always enjoy watching and following your design process.
This is a huge oversight on my part not including a version where the TPU strap is straight for folks. I’ll get this added to the STL’s today or tomorrow. It will use the same hooks and pins if you want to print those in the meantime.
A huge thank you FPF, I'll be downloading hooks and pins and gets those printing. And will be on the lookout for the other version of the TPU straps. Again thank you for your work, I have gleaned design tips and ideas from other videos, even if a particular design didn't directly apply to my needs !
Downloaded and printed one strap, added the hook n pin. Put it on handrail to get wife's thoughts?-------- She thought that was gonna work great !!!! Gained some brownie points just before Christmas! Thanks FPF !!!!
I'm glad to see you've healed enough to dispense with all the medical equipment on your arm! I'm glad to see you've joined the club of those of us who balance printing functional stuff *and* fun multicolor garbage of the week, just because it's fun. :-) Suggestion for 2025: maybe refactor the stocking hangers using TPU-for-AMS, so that the pin and assembly step can be optimized away entirely. Merry Christmas to you, Mrs. FPF and all your munchkins!
Thx! Merry Christmas to you and yours as well. I didn’t have any on hand but considered using it. May need to do a follow-up and see if the connection holds as tightly as the pin.
Very cool project and another excellent design. Only thing I would change is the TPU color. Either green (for Christmas colors) or brown to blend in with the rail.
With a normal Safe Working Load of 1/6th of the ultimate failure load for loading equipment, you need to mark the stockings with a SWL of 17.5 lbs or 7.9kg. I think a nice two colour print in safety yellow with black text should do the trick, firmly attached to each stocking. Greetings from the UK 🇬🇧.
I've been playing around with TPU for a while now. Amazing stuff! I said 100lbs jokingly, and was surprised. PLA on the hook itself might have done as well, but PETG was probably the right choice. Interesting design!
Bambu just released TPU filament suitable for AMS, so for future tpu combinations with other hard filaments, you could print in place a design without a pin. Just putting it out there. Like the video, especially the part with the fail test. 👍
You could put holes in it like a belt…then you can place the hook on after attaching to rail where you want and it would swivel…gravity pulling it down so no longer at angle.
There was a very recent video on another channel about different types of plastic sticking to each other, and which ones can act as support or basically perma-bonded to TPU too. It would mean no pin, but also slight redesign (same entry, drop to plate after it) of the band or a full-length support below it. Lots of poop with a bambu though, with possible contamination problems with the different colors. Just a thought!
Should put the hook on the strap above the connection so that the hook is aligned with the railing. Just pin the hook to the strap so it can pivot and hang plumb. That would also hide more of the strap and use a narrower hook.
I did make a guess, an incorrect one. I expected the TPU to stretch and unhook itself. Not what happened. I also second the use of the Knipex pliers instead of a press. It is much easier to align things and they generate plenty of force. They also work great for magnets as the magnet sticks to the jaw while you are aligning the parts.
Isn’t amazing how we can solve simple problems and turn around and make them so quickly with 3D printers. Here are my thoughts on the design. I would have just made a loop and passed the tpu thru that rather then create the slot. Second I would not tried to capture the PETG in a cavity I would have made a slot so that gravity would allow the stocking to be straight no matter the angle of the railing. Basically there is no need to angle the tpu. Your design required the stocking to sit very low from the rail due to the slot in the tpu and then adding the angle you added maybe 2-3” and I think it could have been 1/2” - 1”. I know it’s just a fun project and I’m not criticizing just a different design perspective after seeing yours. Amazing strength on your load test I would have never thought that.
Currently trying to figure out a stocking hanger for a a wooden oak beam above the fireplace. As the good lady doesn’t want me to screw into the wood, I was thinking of a gold coloured “G clamp” with a decorative star or christmas decoration on the spine/ back upright of it. By all means, feel free to jump in with your own take on this?! 🇬🇧🎄🎅🏻
The TPU seems to be quite rigid, is it the Bambu TPU for AMS? I'm impressed how strong the hook was. Would have guessed around 70 pounds, but I'm biased, the comments spoilerd me.
Would the image have looked better with ironing on the top surface? On the other hand, it looks a bit pixelated in a good retro-way. Keep up the good work!!
Instead of making the strap straight, couldn't you design it as a large radius V shape so when it wraps around the bannister the arms down to the hook hang vertically? That's the only thing that seems off to me - where you compensate for the angle should be as high up as possible.
My guess of 100 lbs wasn't far off. I was sure it was going to be the pin that was the weak point but it looks like it held up the best. Hope this doesn't mean Santa now knows he can get away with putting rocks in the stockings.
If you put the bungee on and with the ball on the bottom and the cord wrapping from under and over. You probably could have just hung them from the ball for the most part.
My guess was the hook would fail, but that was the obvious likely point of failure so I award myself zero points there. I also thought 20lbs and layer delamination. So I have negative points on both.
I added an option of a straight TPU strap (without the 30 degree offset) to the download.
My guess was that it would fail at the narrowest point of the tpu strap, either at the the point where it connects to itself or at the pin. This test shows just how tough tpu is... Awesome vid FPF!
This felt like a super-sized episode and I loved every minute of it. The bonus of the Switch was nice, even though I’m past my EotS days and don’t have a laser. Seasons Greetings to you and Mrs. FPF! 🎄🎅🤶
I love seeing your design process and hearing shop talk. Keep it up!
Wow, that was amazing.. I thought it would separate where the tpu goes through the slot in the strap or at 60lbs. I have so many ideas for this. GREAT WORK keep it up
Oh Man! As I watched the progression of the video, I was so hoping that once you reached the final design, that you were also going to include a version of the TPU strap with a straight end, for those, including myself, putting stockings on the horizontal sections of railing. I was so close to FPF providing the long sought after perfect Christmas Stocking Hanger Solution that I've been searching for! Great Design, just can't use it in my application. Thanks FPF for all the work you put into your videos, even though most designs aren't anything I can use, I always enjoy watching and following your design process.
This is a huge oversight on my part not including a version where the TPU strap is straight for folks. I’ll get this added to the STL’s today or tomorrow. It will use the same hooks and pins if you want to print those in the meantime.
A huge thank you FPF, I'll be downloading hooks and pins and gets those printing. And will be on the lookout for the other version of the TPU straps. Again thank you for your work, I have gleaned design tips and ideas from other videos, even if a particular design didn't directly apply to my needs !
@@darrinhall2776 I just added it to the ZIP file
Downloaded and printed one strap, added the hook n pin. Put it on handrail to get wife's thoughts?--------
She thought that was gonna work great !!!! Gained some brownie points just before Christmas! Thanks FPF !!!!
@@darrinhall2776 so glad to hear it! thx for sharing
I'm glad to see you've healed enough to dispense with all the medical equipment on your arm!
I'm glad to see you've joined the club of those of us who balance printing functional stuff *and* fun multicolor garbage of the week, just because it's fun. :-)
Suggestion for 2025: maybe refactor the stocking hangers using TPU-for-AMS, so that the pin and assembly step can be optimized away entirely.
Merry Christmas to you, Mrs. FPF and all your munchkins!
Thx! Merry Christmas to you and yours as well. I didn’t have any on hand but considered using it. May need to do a follow-up and see if the connection holds as tightly as the pin.
WOW! I never would have guessed it would have endured that kind of force. Thanks for sharing!
Very cool project and another excellent design. Only thing I would change is the TPU color. Either green (for Christmas colors) or brown to blend in with the rail.
With a normal Safe Working Load of 1/6th of the ultimate failure load for loading equipment, you need to mark the stockings with a SWL of 17.5 lbs or 7.9kg. I think a nice two colour print in safety yellow with black text should do the trick, firmly attached to each stocking. Greetings from the UK 🇬🇧.
lol, that would be great!
This was a fun one to watch!
I've been playing around with TPU for a while now. Amazing stuff! I said 100lbs jokingly, and was surprised. PLA on the hook itself might have done as well, but PETG was probably the right choice. Interesting design!
Bambu just released TPU filament suitable for AMS, so for future tpu combinations with other hard filaments, you could print in place a design without a pin. Just putting it out there. Like the video, especially the part with the fail test. 👍
Nice design think through process, build, and test! Great work!
You could put holes in it like a belt…then you can place the hook on after attaching to rail where you want and it would swivel…gravity pulling it down so no longer at angle.
There was a very recent video on another channel about different types of plastic sticking to each other, and which ones can act as support or basically perma-bonded to TPU too. It would mean no pin, but also slight redesign (same entry, drop to plate after it) of the band or a full-length support below it. Lots of poop with a bambu though, with possible contamination problems with the different colors. Just a thought!
I would open the sides of the hook so that the TPU strap can pivot around the pin. No need to angle the strap.
Should put the hook on the strap above the connection so that the hook is aligned with the railing. Just pin the hook to the strap so it can pivot and hang plumb. That would also hide more of the strap and use a narrower hook.
I did make a guess, an incorrect one. I expected the TPU to stretch and unhook itself. Not what happened. I also second the use of the Knipex pliers instead of a press. It is much easier to align things and they generate plenty of force. They also work great for magnets as the magnet sticks to the jaw while you are aligning the parts.
Thanks. Merry Christmas. Fun video and very educational. Much appreciated.
We don't stocking hangers here in Australia, but that was a pretty cool project.
Isn’t amazing how we can solve simple problems and turn around and make them so quickly with 3D printers. Here are my thoughts on the design. I would have just made a loop and passed the tpu thru that rather then create the slot. Second I would not tried to capture the PETG in a cavity I would have made a slot so that gravity would allow the stocking to be straight no matter the angle of the railing. Basically there is no need to angle the tpu. Your design required the stocking to sit very low from the rail due to the slot in the tpu and then adding the angle you added maybe 2-3” and I think it could have been 1/2” - 1”. I know it’s just a fun project and I’m not criticizing just a different design perspective after seeing yours. Amazing strength on your load test I would have never thought that.
Currently trying to figure out a stocking hanger for a a wooden oak beam above the fireplace. As the good lady doesn’t want me to screw into the wood, I was thinking of a gold coloured “G clamp” with a decorative star or christmas decoration on the spine/ back upright of it. By all means, feel free to jump in with your own take on this?! 🇬🇧🎄🎅🏻
some flexible materials can get back in shape if you put them in hot water. Would like to know if this could "rescue" the white strip
TPU for the win 👍👍👍👍
They look good but... White zip tie with a printed hook might have been a lot less work and print.
… and a lot less fun!
The screen on the switch bight look a bit better if ironed as the last pass.
idk if that will mess with the laser tho?
Great video! Really enjoying your weekly updates. What software do you use for the design?
The TPU seems to be quite rigid, is it the Bambu TPU for AMS? I'm impressed how strong the hook was. Would have guessed around 70 pounds, but I'm biased, the comments spoilerd me.
I thought the TPU was going to break at the pin. I did get right that the force would be butt puckering!
The real question is, who's going to wake up to 100 lbs of coal in their stocking on Christmas morning. ; )
Curious what the print orientation of the hook was when printed? Either way, layers direction would be of concern for overall strength.
Would the image have looked better with ironing on the top surface? On the other hand, it looks a bit pixelated in a good retro-way.
Keep up the good work!!
Instead of making the strap straight, couldn't you design it as a large radius V shape so when it wraps around the bannister the arms down to the hook hang vertically? That's the only thing that seems off to me - where you compensate for the angle should be as high up as possible.
Shouldn't you have a micro switch to stop the laser if door is opened, a kid could get hurt. But i like the build. Thanks.
Agreed. I need to figure this out
Why not design a hook, which is , like a pearl, strung on the rubber band. would save the locking pin. :)
What hardness TPU did you use in this design? 80, 85, 90?
90A
My guess of 100 lbs wasn't far off. I was sure it was going to be the pin that was the weak point but it looks like it held up the best. Hope this doesn't mean Santa now knows he can get away with putting rocks in the stockings.
Just printed 5 of the Switches for the g-kids.
Need to sort out the chains. Holding it up with a nail? We know you want (and can) make something better for that ;)
If you put the bungee on and with the ball on the bottom and the cord wrapping from under and over. You probably could have just hung them from the ball for the most part.
Tried a couple different combos last yr. That worked while they were empty, but didn't hold the heavy ones.
Green TPU?
Funny you should mention that. . Mrs. FPF requested green, so I ordered some, and before it came, she starting liking the white, so we kept it :)
My guess was the hook would fail, but that was the obvious likely point of failure so I award myself zero points there. I also thought 20lbs and layer delamination. So I have negative points on both.
Zip ties?
Nintendo will be knocking on your door any minute now.
Happy wife happy life !
First