An introduction to chrome stripping with Safe-T-Strip
An introduction to chrome stripping with Safe-T-Strip plus a trouble shooting table
You may want to brush plate an item that has already been chrome plated, for example an antique cigarette lighter or bathroom tap. If this is the case you will need to strip off the layer of chromium, as this plated layer is impossible to plate over.
Spa Plating has made this chrome stripping task much easier in a number of ways. Our Safe-T-Strip means won’t have to electro-activate after stripping and before plating; all you'll need to do is simply rub with MPU. Another way you can make it even more straightforward is by using our Expansion Box. It has a handy switch that allows you to quickly reverse and un-reverse the current, and means you don’t have to reverse current by plugging and unplugging your leads manually from the rectifier.
Chrome stripping Trouble Shooting
One of the most important things to remember when you are chrome stripping is to make sure you reverse the voltage in order to strip and then, when stripping is complete, that you reverse the voltage back again to normal for plating. It’s very easy to forget to do this, so keep checking as you go along.
|Type of problem||Possible reason||What to do|
|No stripping taking place||1 Incomplete electrical circuit
2. Article not in fact chrome plated
but made from
some other highly polished metal, such as stainless steel.
3. Chrome already stripped!
|1. Check all electrical connections
and clean if necessary. Make sure
the swab is fully soaked in solution;
if not, re-dip the stainless steel electrode
and leave to soak for a few seconds.
Check you have reversed the
normal current at the rectifier by
either plugging the black lead into
the red socket and the red into the
black or, if you are using the Expansion
Box, the switch is in the ‘strip’ position. CAUTION! Remember to reverse
back all of the leads and switches when you come to plate, as you may damage your work if you forget.
2. You may be able to go straight ahead with cleaning and activating with MPU and then plating.
3. Pay special attention to parts that you suspect only have a thin layer of chrome. You can reduce the voltage to 4 volts to increase the stripping time.
|Chrome stripping very slow||1. Unusually thick layer of chrome plate.
2. Poor electrical contact.
|1. Allow more time than usual to strip.
2. Check and clean all contacts.
|After stripping, surface of work underneath is dull or is, in extreme cases, etched.||Voltage for stripping set too high.||