(Part 2) Best mechanical springs according to redditors
We found 96 Reddit comments discussing the best mechanical springs. We ranked the 32 resulting products by number of redditors who mentioned them. Here are the products ranked 21-40. You can also go back to the previous section.
I did something similar, I looked for a product I could purchase (like spring loaded tension rods for curtains) and ended up just making my own by taking a 2" x 4" x 2" shorter than the actual distance between the floor and the ceiling (in my case the distance was 94", so this was a standard 2"x 4"x 8' cut down 2" in length). I drilled a 1/2" diameter hole two inches deep into the center of one end. I then inserted a three inch spring
(like this:) http://www.amazon.com/Forney-72613-Compression-32-Inch----016-Inch/dp/B00G34QAEC/ref=sr_1_1?ie=UTF8&qid=1462463591&sr=8-1&keywords=small+compression+springs+3%22
and a threaded leg
(like this): http://www.amazon.com/Tempest-Furniture-Leveler-Thread-Diameter/dp/B00Y8BDWL6/ref=sr_1_15?ie=UTF8&qid=1462463658&sr=8-15&keywords=threaded+leg
A little adjusting with the nut on the threaded shaft and these spring loaded tension boards held up no-see-um netting around my porch for years. I could staple or screw into them if necessary and after painting they blended right in. I chose strong springs you really had to lean into them to compress them. I made four of them for about twenty dollars, whereas a single curtain tension pole of adequate size was $80.
There's a detailed instructable on this here: http://www.instructables.com/id/Making-Glove-One-a-3D-printed-wearable-cell-p/#step0
It looks like the finger bases are connected to the hand piece with extension springs : http://www.amazon.com/gp/product/B005V4HQ9I/ref=ox_sc_act_title_1?ie=UTF8&m=ATVPDKIKX0DER
And the finger segments are attached together with "snap-fit hinges" of some sort.
Page 744 of this book has more info: http://books.google.com/books?id=FzPEJyDTqtEC&pg=PA744&lpg=PA744&dq=plastic+snap+fit+hinge&source=bl&ots=xDFTctcUB7&sig=v5YWQS5q6mHpVmjcrXauBUp6vVk&hl=en&sa=X&ei=NRzPU5uAJrPesAT7_4DQAg&ved=0CGAQ6AEwCA#v=onepage&q=plastic%20snap%20fit%20hinge&f=false
(Plastics Engineering Handbook Of The Society Of The Plastics Industry)
http://www.amazon.com/Stainless-Steel-Compression-Spring-Length/dp/B000FODFXU/ref=sr_1_28?ie=UTF8&qid=1312821240&sr=8-28
EDIT: If someone does do this I would recommend cutting off and filing down any part of the spring where food could get stuck/build up. Stainless steel should be fine for a dishwasher and food service, granted it probably isn't 316 (standard in food processing plants) it is probably 304. Also make sure the spring isn't small enough to fit through the nozzle on your bottle so you don't choke on it.
the way I see it, you need at least 2 springs with each 25lbs force.
the closest matching spring they have here is only ~11.7lbs (https://www.hillmangroup.com/us/en/Home-Solutions/Home-Accessories/Springs/Compression-Springs/Hillman-Compression-Spring/p/540147) so you'd need 5 of them.
Personally, I'd modify this cheese press to have an X bar pressing down for a more even distribution of pressure, in which case a 3, 4 or 5 spring columns makes sense.
If we're keeping to 2 springs and we're fine with the built-in wobble, then perhaps this one is the best fit: https://www.hillmangroup.com/us/en/Home-Solutions/Home-Accessories/Springs/Compression-Springs/Hillman-Compression-Spring/p/540150
31/32'' diameter, 3-3/4'' long, and 27lbs.
Also this seems acceptable: https://www.hillmangroup.com/us/en/Home-Solutions/Home-Accessories/Springs/Compression-Springs/Hillman-Compression-Spring/p/540794
0.968'' diameter, 3,75'' long, and 27lbs too.
Alternatively, you could get this 10-pack https://www.amazon.ca/Compression-Spring-Stainless-Compressed-Capacity/dp/B005KU6SFQ/ref=sr_1_1?keywords=25+lbs&qid=1565291108&s=industrial&sr=1-1
and then you use a stack of 2 per spring column, with 3 of them around the cheese (instead of 2 in the design... a tripod is more stable than a bipod!) to get the maximum amount of control over your pressing because of the longer length of 2 springs back to back giving you more adjustment length.
edit: I had a thought... If you swapped the springs out, and instead used dumbbells placed on top of the press? Kijiji lists 2x 25lbs dumbbells for like $55 and "Cast Iron Grip Olympic Plates – from $0.67/lb" (so $33.5 for 50lbs), both of which can be used for training too ;)
Just print out Whosawhatsis MK7 replacement or Makerbot's version and see if that works for you. Here's the spring and you can easily find bearings at Amazon as well.
That seems a bit overkill for a small engine cover, something like this would probably be more suitable.
I just learned way too much about springs... the problem is I don't know if they use real spring calculations on switches. Spring Rate, Load Capacity, and what not.
These have a Load Capacity 9.34 Newtons which is 952.41 grams they are a little larger diameter but they would probably fit... and the length is correct.
of P.S. that's about 2.0988 lbs
I think rigging it so that the door closes automatically would be the way to go. Low tech.
Maybe a weak spring could provide enough force to slowly pull it shut without adding so much resistance that it make it hard for her.
Or, perhaps a stiff material (or spring in compression) could be mounted outside, such that it flexes when the door is open, but provides resistance to push the door shut.
If you wanted to use a technical solution, then perhaps it would be possible to rig something up by adapting an online project for an automated door opener/closer.
I just think that having a door sensor trigger an alarm that you then have to manually check and call her on the phone for her to go close the door is very much the long way to solve the problem, when a $10 spring from the hardware store might solve the problem directly. :-)
I had to order this one off Amazon. I think it will have sufficient resistance to tension the belt, but I haven't finished yet so I can't be sure.
Have you played around much with different springs as far as how much force is needed? For example, would this spring be close enough to work? It's the same dimensions, but a bit stronger spring force. My concern is finding the balance between spring force here vs. not compressing the bed level springs when probing.
Also available on Amazon:
https://www.amazon.com/Prime-Line-Products-SP-9729-Compression/dp/B008RG5GVW
I couldn't find just one for sale. This is a 12 pack.
http://www.amazon.com/072-WG-Torsion-Spring-pieces/dp/B00L1IRTBI/