Why the Bit Fan is a Must-Have Accessory

 
Bit fan, as seen in the Bantam Tools store.

Bit fan, as seen in the Bantam Tools store.

 

We have developed a really cool new accessory for the Bantam Tools Desktop PCB Milling Machine that makes your tools last longer and gives your milled parts a nicer surface finish. It also enables you to to see your workpiece more clearly. Win win! We call our new friend the Bit Fan. And the best part is that you can mill your own Bit Fan in 7 minutes!

Update: based on a suggestion from user Peter Luong, we made an STL version of the Bit Fan. If you don't have HDPE but you do have a 3D printer, you can print the Bit Fan!

Once you’ve made one, simply slip the Bit Fan onto the end of your tool and it will blow chips (or swarf) out of the way as you’re milling. Once you try milling with the Bit Fan, you'll never go back.

 
 

How to Make a Bit Fan

Tools and Materials

  • HDPE, 0.25" thick, at least 1.5" square — note that we sell both 0.25" and 0.375" HDPE, so make sure you choose the right file below

  • Flat end mill, 1/16” 

  • Nitto tape

  • BitFan.nc for 0.250" HDPE (right-click and choose Save As)

  • BitFan-375.nc for 0.375" HDPE (right-click, choose Save As)

  • BitFan.stl (if you don't have HDPE but you have a 3D printer)

Instructions

Step 1:  Attach the HDPE to the bed with Nitto tape.

Step 2: Insert the 1/16" flat end mill.

 
Breakdown of stock set up in the Bantam Tools Desktop PCB Milling Machine.
 

Step 3: Set up your material in Bantam Tools Desktop Milling Machine Software to match the size of the HDPE you’re using.

Step 4: Change to a 1/16” flat end mill in the Bantam Tools Desktop Milling Machine Software and locate the tool.

Step 5: Open BitFan.nc in the Bantam Tools Desktop Milling Machine Software.

Step 6: Select a 1/16” tool in the BitFan.nc plan.

Step 7: Start milling!

 
Selecting proper tool info in the Bantam Tools Desktop Milling Machine Software. Note: Bantam Tools Desktop Milling Machine Software was previously called Otherplan.

Selecting proper tool info in the Bantam Tools Desktop Milling Machine Software. Note: Bantam Tools Desktop Milling Machine Software was previously called Otherplan.