Overcomplicated Variable Torque Wrench Ratchet
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Preliminary estimate for PETG
€1.79 – €2.19 net (excluding VAT)
For file: set1_02mm_petg_mk25s_2h15m.gcode
This is an estimate for one file. You’ll confirm the exact price before ordering.
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File used for this estimate
Average indicative estimate: €1.99 excluding VAT (range midpoint).
- Weight reported by the author
- 21 g
- Print time reported by the author
- 2.25 hr
- Source material
- PET
- Estimate material
- PETG
- Estimate printer
- Bambu Lab P1S - 0.4 nozzle
- Estimate process
- 0.20mm Standard
Indicative estimate for the selected file only, based on the author’s weight and print time. File variants are not added together. The final price is calculated after file analysis.
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REMEMBER: do not leave torque wrench in preload state. Always unscrew cap to 0 position or below when not in use.
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Updated at source:
Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution — Noncommercial
REMEMBER: do not leave torque wrench in preload state. Always unscrew cap to 0 position or below when not in use. It is usual practice using torque wrenches.
UPDATE 2020-04-19 added more constant and variable thicknes springs.
As most of my printed parts use M3 hex screws, I got tired of using hex L-key. So decided to make torque wrench for light use.
With default 1.8mm thick spring it works in range of 0.39 - 1.06Nm (depending on PETG manufacturer spring stiffness will vary). You can switch springs if needed to change Nm range. Now I only included 1.8mm and 2.05mm springs. Will upload more springs. Designed variable thickness springs across its length which gives wider range like example 0.5-2.5Nm.
I tested torque wrench mechanism, it can withstand 3Nm load, but since I added ratchet mechanism later and didn't had a chance to test it. So it probably is a weaker point and might break at that point. I doubt anyone needs so much torque, with 3.5Nm I squished 3D printed part and M4 screw itself.
Wrench uses 3x 6000ZZ 10x26x8mm bearings, 2x M3 50mm buttonhead bolts and 2x M3 nuts, everything else is 3D printed.
This is probably useless tool for most of the makers as it is pretty bulky, but I hope someone will make some use of it.
This is second gen of wrench, first gen was 2 times shorter, without wide front but lacked ratchet function.
Designed to avoid using supports as much as possible.
Feel free to ask.
Print instructions
Parts BOM below. It's noted which parts has to be printed with PETG.
As I printed all parts from PETG. I included 3 gcode files, each of them has different parts set, Set1 parts with supports, Set2 parts with brim, Set3 parts without supports and brim. I used textured bed sheet.
Assembly video: https://www.youtube.com/watch?v=opOk2o8NLI0
BOM link: https://docs.google.com/spreadsheets/d/1kFQk56aX42L3CyWq5Kztgkbw85gURGIeB6PzmdoBpio/edit?usp=sharing
Filament Quantity Name
¯_(ツ)/¯ 1 Filament Top Pin
BUY 3 6000ZZ 10x26x8
¯\(ツ)/¯ 1 Bit Base V2
P E T G 1 Cap
¯\(ツ)/¯ 1 Fastener Top
P E T G 1 Insert
¯\(ツ)/¯ 6 Pusher V3
¯\(ツ)/¯ 6 Teeth V2
¯\(ツ)/¯ 1 Spring Preloader
¯\(ツ)/¯ 1 Tube
P E T G 6 Clip
¯\(ツ)/¯ 1 Clip Bottom Holder
¯\(ツ)/¯ 1 Clip Middle Holder
¯\(ツ)/¯ 1 Clip Top Holder
¯\(ツ)/¯ 1 Fastener Bottom
¯\(ツ)/¯ 1 Filament Botom Pin
¯\(ツ)/¯ 1 Hex Shank Holder
BUY 2 M3 Nut
BUY 2 M3x50mm
¯\(ツ)/¯ 1 Spacer
¯\(ツ)/¯ 1 Switch Inner
¯\(ツ)/¯ 1 Switch Outer
¯\(ツ)/¯ 1 Switch Ring
¯\(ツ)_/¯ 3 Switch Ring Holder
P E T G 6 Parametric Spring