If Blackfast 181 is too strong certain grades of pewter may turn brown. To rectify, weaken the 181 solution.
PEWTER BLACKENING PROCESS
STEP 1
Components must be free from grease
STEP 2
Water wash to obtain a wetting condition
STEP 3
Immerse in Blackfast 181 until pewter darkens to required colour (dilution 4 – 5 parts water to one part Blackfast 181). Average dwell time 3 – 4 minutes
STEP 4
Water rinse
STEP 5
Dry components – methods available:
i) maize
ii) oven dry
iii) hot air
STEP 6
Relieve components if a contrasting effect is required – methods available:
i) rotary vibrating machine
ii) typhoon barrel
iii) manual clean with abrasive paper/cloth
iv) polish using a rotary bench polishing machine
STEP 7
Lacquer finish if required
APPLICATION DATA SHEETS
View complete technical information on how to effectively apply the various relevant solutions for your blacking production line.
SAFETY DATA SHEETS
Information for the safe handling of both Supplied (Concentrated) and Working (Diluted) Solutions.
SOLUTION STRENGTH TESTS
In each of the guides on this page, you’ll find testing processes based on proven tests for checking and adjusting the strength of our solutions
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