3D Printed Tachometer for Lathe Spindle - Part 2, with Creality CR-Scan Otter!

STL's and links: fpfdesigns.com/
Get your own Creality Otter 3D scanner: store.creality.com/products/c...
Use discount code OTTER100 for 10% off
Knipex Smooth-Jaw Pliers Wrench: amzn.to/3R5kbgi
Hall Effect Sensors: amzn.to/3WG9ogi
Magnets: amzn.to/4bpq2VT
Part 1: • 3D Printed Tachometer ...
Part 2: • 3D Printed Tachometer ...
Part 3: • 3D Printed Tachometer ...
Outro music is "Quantum" by "Vapora", used with explicit permission from the artist. • Quantum
Other music used is "Monolith" by "Vapora", used with explicit permission from the artist. • Monolith
New videos published every Friday, featuring a new 3D printed functional object, how I use it, and design considerations.
The design depicted in this video is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License or other non-commercial license.
creality
otter
3d scanner
touchdro
tach
rpm
revs
feed rate
pm1440
1440gt
precision matthews
lathe
magnets
hall effect
reluctor
functional
print
fpf
PLA

[@MisterkeTube]

Putting magnets with opposite polarity inbetween each pair that you have now would ensure the magnetic field switches polarity nicely under the sensor. On the oscilloscope you could see the signal was not high 50% of the time, but way more. That probably means the field is mostly wrapping around the printed ring as it only has similarly polarized magnets there, instead of inverting between each two magnets. Adding magnets with inverted polarity would ensure such inversion of the field and in addition will also help the ring + magnets strongly attract to the steel the ring is wrapping around.

[@cppctek]

Great work. I really want to try a scanner for making more parts for my handhelds. I’ve done a ton of 3d printed parts for the legion go and rog ally. The scanner would be like the cheat sheet I need to get started with the basics and have a platform to work on and modify. Would also be super helpful with making pc case mods as well. I just picked up a tower 300 and I brain stormed 3-4 insane mods that would really transform the case for me and help a lot of people but copying those dimensions in is very intimidating. Thanks for showing it off in a real world scenario that helps me better understand the value there

[@FunctionalPrintFriday]

For non-planar objects, it works really well. For planar stuff like cases, etc., you'll probably need some marking dots, but they're cheap and it's still WAY faster than trying to model really complex shapes. Can you imagine trying to model that impact driver? Would literally be DAYS of work. Scanner did (half) of it in 2 minutes.

[@haydenc2742]

Pretty cool stuff! Keep em coming!!!!

[@Roobotics]

Man that scanner is tempting me, I just took over 100 measurements for an enclosure project(remaking a NUC PC case from scratch, ports, components, etc), would have been amazing to just scan it then be basically done past some sanity checks. Totally different workflow!

[@andyb7754]

Very, interesting. Can't wait to see the finished project. Thank you for the videos.

[@FunctionalPrintFriday]

Thanks for watching!

[@UnCoolDad]

I wonder if it might be worth adding 3 set screws to the magnet ring to make sure it doesn't wander over time. Might need some knurled heat set inserts to keep them in.

[@sleepib]

I might try a split clamp for that stud that holds the cover on. Assuming there's room for it.

[@heidi5942]

I'm too early to see others comments 😢. So I'll start. Loved the video.

[@FunctionalPrintFriday]

thx!

[@amundsen575]

insted of using magnets use a hall effect sensor called a Gear Tooth Sensor . allegro ATS667, ATS601or an automotive hall crank or cam sensor and you need only make a steel tooth wheel, no magnets needed as the sensor has a magnet embedded in it

[@FunctionalPrintFriday]

interesting, I'll have to try this

[@billdoodson4232]

You need some of that matt white spray for scanning to prevent reflections. Clough42 has used it in several of his videos.

[@ThePlexman]

Talcum powder and ipa in a spray bottle spray on object ipa evaporates and leaves talc behind on the surface

[@shalehausler4383]

Baby powder mixed with alcohol works in a pinch, but you have to clean up after then.

[@daniel-pablo]

Goes on dry athlete's foot spray works great for scanning

[@FunctionalPrintFriday]

interesting. . the regular stuff was pricey enough that when I looked it up, I didn't buy it. I was figuring there must be some hack that's cheaper :P

[@ritzrocco494]

I wonder how useful the scanner will become in the future

[@FunctionalPrintFriday]

only time will tell, but for odd-shaped stuff that's tricky to measure or model I can already tell you it's AWESOME

[@Todestelzer]

It’s pretty handy to have one. I wouldn’t give away my scanners. I’m tempted by the creality raptor but it’s pretty expensive.

[@markburton5292]

small c clamp for press works as well

[@michaelbraaten]

It says you’re getting 10 or less FPS in the upper right hand corner of the interface, in case you missed that before lol

[@FunctionalPrintFriday]

It’s because the screen capture is running so i can show you guys in the vid. With it off it hovers around 20

[@Hilmi12]

I would put a dab of hot melt glue on that ring. Cheap insurance against slippage. Also painters tape was a genius solution. I'll try it

[@joell439]

Nice - looking forward to part 3. The scanners keep getting better. Can you give us a hint on how long the processing time was after you completed the scan and when the surface model was rendered? Just wondering if the video was showing us the processing in real-time or time-lapsed?

[@FunctionalPrintFriday]

30secs to 2 mins at the longest

[@joell439]

@@FunctionalPrintFriday Those rendering times are very reasonable. Thanks for confirming. 👍

[@kmatch1]

The stud above the spindle is begging for a sensor mount. Does the cover make that not possible?

[@FunctionalPrintFriday]

yeh, cover would interfere

[@JH-zo5gk]

Your getting 9 fps scanning. Upper right corner. 21 on the drill

[@Paperbutton9]

if this is cheating then using a pen and paper is cheating cuz socrates said youre supposed to just remember everything cuz Phaedrus

[@michaelgleason4791]

"My laptop is a core i7." Goddamn that triggers the fuck out of me. Intel has been making i7s for like 15 years. You might as well say your laptop has a built-in monitor.

[@FunctionalPrintFriday]

It also has a built-in monitor. j/k, I respect your callout, and I should know better as I work in IT :) It's an i7-10750H w/16GB RAM and an RTX 3070 mobile