Burr-free Aluminium Entry board for PCB drill_Backup board ...
-Alu pcb entry sheet significantly lengthens the life span of the drill bit. Its particular alloy composition will keep the cleanness and the cooling of the drill little bit. Whats more aluminium board pcb really is an excellent conductor of warmth so it helps prevent overheating of the drill little bit and it can prevent the oxidation of the top.
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