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| {{Parts infobox | | {{Parts infobox |
| |image = Bolt-thumb.png | | |image = Grbl4crp850r0.3.png |
| |designers = [[User:Tim|Timothy Schmidt]] | | |designers = [[User:Tim|Timothy Schmidt]] |
| |date = 2019 | | |date = 2021 |
| |vitamins = | | |vitamins = |
| |materials = | | |materials = |
| |transformations = | | |transformations = [[Soldering]], [[Etching]] |
| |lifecycles = | | |lifecycles = |
| |tools = [[Metal lathes]] | | |tools = [[Soldering irons]] |
| |parts = | | |parts = [[Printed circuit boards]], [[Solder]], [[Headers]] |
| |techniques = | | |techniques = |
| |stl = | | |stl = |
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| =Introduction= | | =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.
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| Fastening two or more parts together should be quick, easy, produce a strong joint, and be a fully reversible process.
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| =Challenges= | | =Challenges= |
| Bolts of different lengths are required to join one, two, and three thicknesses of [[frames]] to brackets, panels, and each other.
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| 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.
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| <youtube>tkEVwpl2S4Q</youtube>
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| =Approaches= | | =Approaches= |
| A selection of nuts and bolts have been chosen to interoperate with various [[frames]] and are listed in the Parts section.
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| Replimat is currently using hex head bolts and nylock nuts to address the loosening issue.
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| =Parts=
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| ==8mm frame==
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| M3xXX, M3xYY, M3xZZ bolts
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| ==38.1mm frame==
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| <gallery>
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| Bolt-m8x50.png|M8x50
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| Bolt-thumb.png|M8x90
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| Bolt-M8x130.png|M8x130
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| </gallery>
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| ==40mm frame==
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| M12x50, M12x90, M12x130
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| ==100mm frame==
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| M25xXX, M25xYY, M25xZZ bolts
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| =Life cycle=
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| ==Degenerative transformation==
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| Long bolts can be cut to form shorter bolts.
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| ==Last use==
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| Stripped, bent, or abraded bolts degrade to abrasive pellets for [[ball mills]].
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| =Suppliers=
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| * [https://shop.stafast.com/ Stafast]
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| =References= | | =References= |
| * [https://en.wikipedia.org/wiki/ISO_metric_screw_thread Wikipedia: ISO metric screw thread]
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| * [https://www.thingiverse.com/thing:193647 NUT JOB | Nut, Bolt, Washer and Threaded Rod Factory]
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| * [https://www.thingiverse.com/thing:4635654 Metric screw measuring device - M2/2.5/3/4/5 4-50mm]
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| * [https://www.thingiverse.com/thing:4792033 Metric Screws Quick Measure jig M6 - M14]
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| * [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)]
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| * [http://www.metrication.com/engineering/fastener.html Metrication.com: Metric Fasteners]
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