| ??? 11/01/05 10:13 Read: times Msg Score: +1 +1 Informative |
#103214 - Bubble tank Responding to: ???'s previous message |
Charles Bannister said:
Ans. I etch one side at a time. Hi Charles, The best way to etch (faster, does both sides) is either a spray etch, or a bubble etch - spray etching is harder to do, but gives incredible fast etch rates. You can make a very very cheap bubble etching tank from a polythene container (long narrow tanks are best), a piece of plastic tube and an aquarium pump, or even, in extremis an inner tube filled with air. Drill or pierce SMALL holes in the tube for a length comparable to the length of your tank. Weight the tube, so it sinks even when full of air. Place the PCB VERTICALLY in the tank and fill with etchant- we did it with a rail across the tank and some clothes pegs to hold the pcb off the rail. Keep the etchant warm, with an aquarium immersion heater, or your natural ambient ! and blow. With decent etchant, you can strip a panel is less than 5 minutes. Steve |
| Topic | Author | Date |
| Toner Transfer PCB's | 01/01/70 00:00 | |
| Toner Transfer | 01/01/70 00:00 | |
| Don't forget | 01/01/70 00:00 | |
| I used acetone | 01/01/70 00:00 | |
| clean copper side | 01/01/70 00:00 | |
| File Edges of PCB top and bottom. | 01/01/70 00:00 | |
| Type of paper used | 01/01/70 00:00 | |
| PNP BLUE Type thermal paper. | 01/01/70 00:00 | |
| Amazing | 01/01/70 00:00 | |
| Double sided... | 01/01/70 00:00 | |
| Alignment of Top and Bottom PCB Layers | 01/01/70 00:00 | |
| Double sided etching | 01/01/70 00:00 | |
| Double sided post ! | 01/01/70 00:00 | |
| Q&A double sided etching | 01/01/70 00:00 | |
| Bubble tank | 01/01/70 00:00 | |
| Making one with these guidelines | 01/01/70 00:00 | |
| addendum | 01/01/70 00:00 | |
| Like these... | 01/01/70 00:00 | |
| Something like this? | 01/01/70 00:00 | |
Yes | 01/01/70 00:00 | |
| New methods | 01/01/70 00:00 | |
| Art Paper | 01/01/70 00:00 | |
| Blue sheet Vs Photographic paper | 01/01/70 00:00 | |
| Timing and Tinning | 01/01/70 00:00 | |
| Tin your self | 01/01/70 00:00 |