The basis for this will be an extruded plastic photo frame I found at the Reject Shop. Here's what it looks like:
|Front - all glass except for the thin plastic edge|
|Back - the extruded plastic.|
BubblesI've ordered a small aquarium air pump, tubing and an "air-curtain" (aka, length of 10mm rubber hose with small perforations along it's length) from various Hong-Kong ebay retailers. This will be placed at the base of the tank.
HeaterPlan is to use a string of resistors encased in heatshrink tubing, placed at the bottom of the tank, above the air curtain. I haven't yet purchased these. It's suggested to keep the etchant solution at 55-60 degrees celsius, so I'll do a bit of calculation soon to see how much power is really required.
Total cost so far
|2||"FORMAT" 6x8" photo frames||$6.00|
|1||Small tube of silicone sealant||$8.50|
|1||Aquarium air pump (incl delivery)||$6.58|
|1||2 metre length of air tubing (incl delivery)||$2.45|
|1||30cm air curtain (incl delivery)||$1.96|
|Total so far: $25.49|