I just recently bought some new equipment (HBM mini lathe and a 3018 cnc-machine) and wanted to do a little project to test out the 2 machines and get familiar with them.
Since I just passes 25K subs I decided to do a little giveaway to show my appreciation to all of you. I really would've never thought I would even reach 1K let alone 25K, so thank you very very much ;-)
I first tried to hold the coin down on the engraving table using double sided tape, but this didn't turn out to be a great idea because the lubricant used for the drill bit dissolved the double sided tape. In the next attempt I used 2 component epoxy glue which worked excellent. Removing the epoxy glue turned to be pretty easy. I used a 25 degree, 0.1mm tip engraving bit, they did brake from time to time but lowering the engraving speed helped a lot.
I used this model to engrave a bitcoin pattern onto a coin but you can also use the STL-file to print it out using your 3D-printer. You might have to scale it up a bit to reach to desired detail.
I tried to work as safe as possible with the mini lathe (no long sleeves, removed watch, closed safety covers, etc...) but I do realize working this close to the chuck might not be the best idea, so I wouldn't recommend you doing this.
Some of you might also note I'm "destroying" money. this was also one of my main concerns when I started this project so I did some research. This is what I found on the website of the National Bank of Belgium:
"When notes or coins are definitively withdrawn from circulation, one is not punishable. This is the case, for example, if they are incorporated into souvenirs, decorative works or works of art in such a way that they can no longer be returned to their original state."
Website:Â https://www.nbb.be/nl/faq/mag-een-bankbiljet-een-munt-beschadigd-beschreven-betekend-worden
I also send them an email just to be sure but I guess this isn't even worth their time because they just keep redirecting me to other departments and it has been a few months now since I've heard from them. but we should be good.
The model can be 3D-printed and/or engraved.
The STL-files option includes these files:
-Individual STL-files
The Fusion 360 source files option includes these formats:
-.f3d
-.obj
-.stp/.step
-.3mf
-.fbx
-.skp
-.smt
-.ipt files
Part list, schematics, code and more info about this project can be found here
Printer used:
Flsun Q5Â
CNC-machine used:
3018 CNC
Supports:
Yes
Resolution:
0.15
Infill:
25-30%Â
Note:Â This is not a physical product. When you're purchasing the STL or Fusion 360 source files you will be able to download these files. A physical product will not be send to your address.
Personal Use License (Standard Included)
See attached license for the use of the files.
Commercial License (Optional Purchase)
Want to sell physical 3D prints of this design? You can purchase the Commercial License as an optional upgrade.
The Commercial License includes the STL files required to 3D print the model and grants you the right to produce and sell an unlimited number of physical copies of the purchased design.
What is allowed:
- Unlimited production and sale of physical 3D prints.
- Selling through online marketplaces, webshops, and physical stores.
- Modifying or resizing the model for physical production.
- Lifetime commercial use with no recurring fees or royalties.
What is NOT allowed:
- Selling, sharing, or redistributing the digital design files (STL, STEP, 3MF, etc.).
- Distributing modified or remixed versions of the digital files.
- Uploading the files to file-sharing platforms or 3D model marketplaces.
- Using this license for other BBprojects designs.
Important: The Commercial License is not included with the standard Personal Use License and must be purchased separately. Only physical 3D-printed products may be sold. Redistribution of digital files is strictly prohibited, even if they have been modified.
By purchasing the Commercial License, you agree to the full BBprojects Commercial License terms included with your download.