PCB Aluminum

Aluminum Drilling Entry Sheet as a "sacrificial backing board" for metal. You place it under the part you're drilling. It takes the abuse from the drill bit, sacrificing itself to guarantee the actual part you care about comes out with a perfect, clean, and burr-free hole. It's a simple, effective tool that dramatically improves manufacturing quality and reduces secondary deburring operations.

3003 PCB aluminum entry sheet
1100 PCB aluminum entry sheet
1050 PCB aluminum entry sheet
3105 PCB aluminum entry sheet
8011 PCB aluminum entry sheet
1060 PCB aluminum entry sheet
3004 PCB aluminum entry sheet

The entry sheet acts as a sacrificial layer that solves these issues:

Provides Support: It backs up the workpiece, preventing deformation and vibration ("chatter") during drilling.
Guides the Drill: As the drill bit exits the workpiece, it immediately enters the softer, more uniform material of the entry sheet. This guides the drill bit and keeps it centered, preventing it from grabbing and tearing the aluminum workpiece.
Produces a Clean Burr: Instead of forming a large, ragged burr on the workpiece, any tearing occurs inside the entry sheet. The burr is formed on the sacrificial sheet, leaving the exit hole on the actual part much cleaner and more precise.
Protects Equipment: It also protects the drill press table or fixture underneath from being damaged by the drill bit.

Advantages of Aluminum Drilling Entry Sheet

1. It can protect the circuit board against scratches and pressing marks.
2. It improves the nicety degree of the drilling position. It makes the drilling have guidance so that the drill works without deflection.
3. It significantly lengthens the life of the drill bit. Its specific alloy composition can keep the cleanness and the cooling of the drill bit. Whats more, it is a good conductor of heat so it prevents overheating of the drill bit and it can avoid the oxidation of the surface.