The Shop > Tools

Repair Burnt Out HF Plastic Welder?

<< < (3/3)

vtsteam:
Just a point -- it never worked well out of the box "full on" anyway. It was substantially overpowered to begin with and my added power reduction (via the router speed controller) was necessary to get good welds. Otherwise plastic would rapidly burn on the surface without heating underneath. Browned crust and no penetration.

If repaired and losing a coil, I'd start with the controller zeroed, set my desired air pressure and slowly run up the power until melting the plastic rod at the rate I want. Inj the past, that was substantially below 80% of power.

So, though I'd now be running additional (effective) current through the coils .... more  than before, for the same quality weld, it would still be less than the normal out-of-the-box current that the coils saw with no regulation.

Unless I'm missing something important.....?

RussellT:
It might be easier to use 5 out of 7 coils, as that way the connections would be at one end - although running a bare wire down the broken coil would be fine too.

Russell

Navigation

[0] Message Index

[*] Previous page