Living Hinge Failure Tests using 1/8" Baltic Birch Plywood
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- Опубліковано 26 тра 2017
- Testing different living hinge designs to failure point using 1/8" Baltic Birch Plywood.
The dxf file can be downloaded from:
denzilmakes.com/collections/p... - Навчання та стиль
Denzil, you make great videos. I appreciate your technical approach and the fact that you share trial/errors so we don't have to have such a steep learning curve. The fact that you keep us informed through your replies to questions is very generous of you. I also like that you let us know when you are speeding up and making changes to your original plan. Bravo
Honestly you're an absolute legend for sharing these, you've saved me so much time in my last year of school really appreciate it!!
That's really nice to hear. Glad they have been useful.
What a great gift to the community! Awesome work
You're welcome. Glad you liked it.
Thank you for testing all of those all out, it was super helpful to see them side by side.
Amazing! thanks a lot for sharing, you just saved me hours of research and testing
Think I could do the most bendy live hinge on my CNC with a 1/64 (.39 mm) end mill?
The kerf on my laser through 3mm Baltic Birch is around half that, 0.2mm. I have much less experience with CNC routers/mills but I would imagine that so long you are able to cut through the depth of that material with such a small end mill it should bend just fine, probably better as you are removing more material.
very nice samples which you created there. Thank you very much !!!! nice work
Thank you
thank you for sharing. It is very usefull
Excellent! Thank you!
Really good video thank you
Thank you.
Very cool.
Tnx for sharing !
You're welcome
Beautiful
Thank you
I wonder what would happen if you put a thin flexible veneer on the outside of the hinge. Understandably the hinge will have less bend, but it would give a smooth surface on the outside.
That's an interesting idea. You're right it would definitely have less flex.
great job
Thank You.. شكرا لك
I need help understanding those live hinges, especially last one you show that bends nicely. Someone told me that is not needed to make a narrow rectangle, but rather just cut slot. Is that true, or it need to be done properly? I am asking because that process is really slow, and doing single cut will decrease working time drastically. Thank you in advance for the answer.
The living hinges work just fine just cutting a long a line so that the hole is just the kerf width. No need to make a shape. The longer the cut and the closer together the more flex you will get.
@@DenzilMakes Thanks. That is good news to me - simplify design.
hi, can you tell us wich wattage your laser have? and the thickness of the wood? thanks its so I can compare to my laser for speed and power%.
The specs for the machine are as follows:
Laser Power: 80W
Cutting area: 1200mm x 900mm (4' x 3')
Machine Dimensions: 1720mm x 1210mm x 1070mm
Repeatability: ± 0.05mm
Power source: AC 110 - 220V ± 10%, 50 - 60Hz
Total power:
Hi Denzil, thanks for the vid! Question... can you only do the living hinge with the grain? Or does it work when you go perpendicular to the grain. Also, on the last 3, is there a formula for the length of/spaces between the cut lines??
As I am using plywood each ply is rotated 90° so the living hinge can go any direction. Might be interesting to do a comparison so see if there is a difference in failure point.
There is no formula that I use, just a little bit of experience and a lot of trial and error!!
Thank you.
While I do appreciate the information provided, it is not angle that is the limiting factor. It is bend radius.
How do you create the patterns?
I draw them in AutoCAD, you could use any vector drawing package to create them.
This is great, thanks! Maybe I'm doing something wrong, but I opened your file in Illustrator, and it appears that each swatch is only about 1.5" wide, in the video it looks closer to 6" wide. Can you tell me the dimensions of the swatches in your video so I can get the right scale? Thanks again!
The file is drawn in mm and each living hinge pattern is 105 x 191. When you open the file you need to make sure you have the scale as 1 unit = 1 mm and it should open fine.
What do you use to generate the pattern? Just using CorelDraw or something else? Do you use a magic feature or just copy, paste, paste, paste, paste.....
The software I use depends on what I am designing, for this I used AutoCAD and the copy command. If I am adding any text to designs then I find Adobe Illustrator easiest to work with. I am also starting to use Fusion 360 more as the parameters allow you do design something before you know the thickness. This happens frequently if you design something before you have the material as plywood has a tolerance so will always vary slightly, Fusion allows you to quickly alter the design to accommodate this.
I want to draw a heart box on coreldraw . how i can calculate a length of sides with living hinge ?
That's a difficult question to answer. It will vary slightly depending on material and which hinge design you use.
The best place to start is to use the length at the centre of the box wall. The outside will then be slightly stretched and the inside slightly compressed.
Most of the hinges are a little forgiving and will stretch or compress to fit if you are slightly off.
Thank you for your quick response to my questions
great job! you should have published a paper :D
Can we get the Corel Draw file of coostar design? I am from Egypt. Thanks.
I do not know what you mean by coostar. There is a link in the item description to the dxf containing all the living hinge patterns. You should be able to open this in CorelDRAW.
HOW TO OPEN THIS FILE ??
Once unzipped you should be able to open the file in most vector based drawing packages such as CorelDRAW, Adobe Illustrator, or any CAD program.
open the .rar file using winrar or 7zip. Open the .dxf file with either autocad or CorelDraw!
I want Photo Stand
Stodoys is a good solution for every woodworker.