Bolts: Difference between revisions
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= | {{Parts infobox | ||
|image = Bolt-thumb.png | |||
|designers = [[User:Tim|Timothy Schmidt]] | |||
|date = 2019 | |||
|vitamins = | |||
|materials = | |||
|transformations = | |||
|lifecycles = | |||
|tools = [[Metal lathes]] | |||
|parts = | |||
|techniques = | |||
|files = | |||
|git = | |||
|suppliers = | |||
}} | |||
[[Category:Parts]] | |||
[[Category:Structure parts]] | |||
=Introduction= | |||
Fastening two or more parts together sometimes requires special tools, electricity or compressed air, sometimes damages the parts themselves, and sometimes cannot be undone. | Fastening two or more parts together sometimes requires special tools, electricity or compressed air, sometimes damages the parts themselves, and sometimes cannot be undone. | ||
Fastening two or more parts together should be quick, easy, produce a strong joint, and be a fully reversible process. | Fastening two or more parts together should be quick, easy, produce a strong joint, and be a fully reversible process. | ||
<youtube>XLzTB4KLCxU</youtube> | |||
<youtube>yGdszxGiB1A</youtube> | |||
=Challenges= | |||
Bolts of different lengths are required to join one, two, and three thicknesses of [[frames]] to brackets, panels, and each other. | |||
The combination of weld nuts and furniture bolts suggested in [https://www.ocf.berkeley.edu/~mwilliams/reading/construction/How-to-Build-With-Grid-Beam.pdf How to Build With Gridbeam] loosens rapidly and structures built with them begin to wobble quite quickly. A drop of loctite on each nut's threads would help. | |||
<youtube>tkEVwpl2S4Q</youtube> | |||
=Approaches= | =Approaches= | ||
A selection of nuts and bolts have been chosen to interoperate with various [[frames]] and are listed in the Parts section. | |||
Using nylock nuts is recommended to address the issue of bolted connections loosening over time. | |||
Bolt lengths for any size frame are calculated using the following formula: | |||
Frame width (x1, x2, x3) + nut thickness x2 | |||
This allows for using two nuts to lock each other in place, nylock nuts, room for securing [[sheets]], etc. | |||
=Parts= | =Parts= | ||
<gallery> | |||
Bolt-m8x50.png|"1" Bolts secure [[plates]] to [[frames]] | |||
Bolt-m8x90.png.png|"2" Bolts form most [[:Category:joints]] | |||
Bolt-M8x130.png|"3" Bolts are required for many complex [[:Category:joints]] | |||
</gallery> | |||
==8mm frame== | |||
1 Bolt: M3x12<br> | |||
2 Bolt: M3x20<br> | |||
3 Bolt: M3x30<br> | |||
==40mm frame== | |||
1 Bolt: M12x60<br> | |||
2 Bolt: M12x100<br> | |||
3 Bolt: M12x140<br> | |||
==100mm frame== | |||
1 Bolt: M24x150<br> | |||
2 Bolt: M24x250<br> | |||
3 Bolt: M24x350<br> | |||
=Life cycle= | =Life cycle= | ||
| Line 17: | Line 71: | ||
Stripped, bent, or abraded bolts degrade to abrasive pellets for [[ball mills]]. | Stripped, bent, or abraded bolts degrade to abrasive pellets for [[ball mills]]. | ||
[[ | =Suppliers= | ||
* [https://shop.stafast.com/ Stafast] | |||
=References= | |||
* [https://en.wikipedia.org/wiki/ISO_metric_screw_thread Wikipedia: ISO metric screw thread] | |||
* [https://www.thingiverse.com/thing:193647 NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory] | |||
* [https://www.thingiverse.com/thing:4635654 Metric screw measuring device - M2/2.5/3/4/5 4-50mm] | |||
* [https://www.thingiverse.com/thing:4792033 Metric Screws Quick Measure jig M6 - M14] | |||
* [https://eurocodeapplied.com/design/en1993/bolt-design-properties Table of design properties for metric hexagonal bolts M5 to M39 (stress area, shear strength, tensile strength, bearing strength)] | |||
* [http://www.metrication.com/engineering/fastener.html Metrication.com: Metric Fasteners] | |||
Latest revision as of 16:28, 19 April 2023
Introduction
Fastening two or more parts together sometimes requires special tools, electricity or compressed air, sometimes damages the parts themselves, and sometimes cannot be undone.
Fastening two or more parts together should be quick, easy, produce a strong joint, and be a fully reversible process.
Challenges
Bolts of different lengths are required to join one, two, and three thicknesses of frames to brackets, panels, and each other.
The combination of weld nuts and furniture bolts suggested in How to Build With Gridbeam loosens rapidly and structures built with them begin to wobble quite quickly. A drop of loctite on each nut's threads would help.
Approaches
A selection of nuts and bolts have been chosen to interoperate with various frames and are listed in the Parts section.
Using nylock nuts is recommended to address the issue of bolted connections loosening over time.
Bolt lengths for any size frame are calculated using the following formula:
Frame width (x1, x2, x3) + nut thickness x2
This allows for using two nuts to lock each other in place, nylock nuts, room for securing sheets, etc.
Parts
-
-
"2" Bolts form most Category:joints
-
"3" Bolts are required for many complex Category:joints
8mm frame
1 Bolt: M3x12
2 Bolt: M3x20
3 Bolt: M3x30
40mm frame
1 Bolt: M12x60
2 Bolt: M12x100
3 Bolt: M12x140
100mm frame
1 Bolt: M24x150
2 Bolt: M24x250
3 Bolt: M24x350
Life cycle
Degenerative transformation
Long bolts can be cut to form shorter bolts.
Last use
Stripped, bent, or abraded bolts degrade to abrasive pellets for ball mills.
Suppliers
References
- Wikipedia: ISO metric screw thread
- NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory
- Metric screw measuring device - M2/2.5/3/4/5 4-50mm
- Metric Screws Quick Measure jig M6 - M14
- Table of design properties for metric hexagonal bolts M5 to M39 (stress area, shear strength, tensile strength, bearing strength)
- Metrication.com: Metric Fasteners
