INTRODUCTION

• 1 x Machinable Wax
• 1 x CMB Kemapoxy 150

• Milling machine
• 1 x pair of rubber gloves

I went with this tutorial

• i used fusion 360
• open 2d sketch
• Sketch your own design, for me was na Arm to push my Ambu_bag
• Then extrude it

• Now we need to design a block to subtract our design from it

• Now choose combine, to combine the Arm with the Block

• we can take a section to ensure that all is good

• Now choose the split, to make a core and cavity

• Pins to close and open easily

• Finally

• Now go to manufacture

• choose setup
• set your stock dimensions and orientation

• from milling choose 2D, then choose FACE
• Choose your tool, for me was endmill flat 3mm
• set your machine speed and feed rate

• enter your stock hights

• from 2D choose 2D pocket
• repeat the previous steps

• Good what I did, but unfortunately I don't need it.
• I don't need core and cavity for this molding and casting method
• Just I need the postive shape for my part
• Then, i'll get the negative from silicone
• finally i'll get the postive from epoxy.

• Design the postive phase

• and just i used 2D pocket strategy, as in the instructions above
• setup my machinable Wax on Roland milling machine

• then..my postive arm


Casting

To take safety precautions first

• Proper ventilation
• Wear disposable gloves
• Wear protective clothing
• Designate items as resin only
• Wear a respirator
• For more instructions, please visit this site



silicone

• The Ratio of silicone that I used is: (A)10 silicone : (B)1 hardener





Tips:

• Try to stick to this Ratio, otherwise you will find the silicone is hard before you pour it.

• Try to calculate the volume of the product first before mixing in an amount of silicone so that you do not waste it.




Epoxy

I used CMB Kemapoxy 150

• and the Ratio is: 2 epoxy: 1 Hardener
• It takes approximately 48 hours to harden completely

Now I need to redo the same previous processes for the Cap of potentiometer

So, Let's start :)

• I designed the CAP of POT on fusion 360

• Then, i switched to the CAM process

• choose setup, then put your stock dimensions and orintation

• from 2D milling choose Face

• then set the parameters, I used flat Endmill 3mm
• well, our product is 3D, so we need to make 3D milling
• from 3D milling tap, choose 3D Adaptive, then set the parameters, and take care for your Hights

• for the finishing, I chose 3D Adaptive also, but this time i used Bullnose Endmill 3mm

• simulation
• Fabrication

• Silicone A:B 10:1

• failure: Unfortunately, I couldn't get the silicone out of the wood
• So, I made it again with Machinable Wax
• Casting

• Epoxy: I used CMB Kemapoxy 150, Ratio 2A:1B

• Finally