Using a stirrer plate for PCB etching ... The “fish” — the magnetic bar that spins in the etchant — is made of neodymium magnets lengthened by shrink-wrapping heat-shrinking them ...

Specifically, the magnetic stirrer version with a heating function includes a sealed, fire proof die-cast aluminum housing as well as a special Kera Disk ® plate ... oil baths (Heat On), for ...

Hot plates provide less heat, but do so without the danger associated with the open flame and higher temperatures of a Bunsen burner. Hot plates often include digital displays of temperature, hot ...

These things aren’t cheap, either: a bare-bones hotplate with a magnetic stirrer runs about $600 ... That’s a fair bit hotter than any PCB-based heat bed from a 3D printer gets, so consider ...