Summary for rusted cookie cutters Discussion
rusted cookie cutters are the main issue here, and the practical advice is that they can be cleaned or re-tinned if they are special, but replacement is usually cheaper. In the thread, Charles A. Reynolds asked about reproducing old-fashioned tin icicle ornaments with an iridescent finish; Robert Zonis suggested using pearlescent pigments in a clear lacquer or urethane, noting that particle size and concentration change the effect, and mentioned Englehard, EM Industries, Meadowbrook, and Glitterex as possible sources. Goran Budija offered a more elaborate moiré métallique process involving heating, pickling, and lacquering tin. For the rusted cookie cutters question, Ted Mooney said a plating shop can re-tin them, but the labor cost of replating a few pieces usually exceeds the cost of buying new cutters, though the old ones are not inherently dangerous unless they cut you or possibly stain cookies.
Q. Our company produces hand-made tin ornaments & cookie cutters. We have been asked to replicate the old-fashioned tin icicle ornaments that have an iridescent color on each side.
What needs to be applied to the tin in order to achieve these colors . . .or can this type tin be purchased?
Charles A. Reynolds
– Millersburg, Ohio, USA
2001
A. Several companies make pearlescent pigments that use the principle of thin-film reflectance. It is possible to reproduce that on a metal substrate, but I think it would be vastly cheaper to use the existing pigments themselves in a clear lacquer or urethane base. You can get different effects by using different particle sizes and concentrations. The companies are Englehard and EM Industries. Englehard also makes iridescent plastic films, which can be converted to glitter and used like the mica’s (try Meadowbrook or Glitterex) and it may be possible to simply adhere their film to your products.
Good luck,
Robert Zonis
– Bohemia, New York
2001
2004
A. Moiré metalique for tin:
1.heat your objects to 250 °C
2.immerse it into special pickle:
- 2 parts hydrochloric acid
- 1 part nitric acid
- 3 parts water
- 1/4 part potassium bichromate
3.between crystals you must obtain black colour
4.rinse well
5.immerse to hydrochloric acid
6.without rinsing immerse in: 10 parts sodium thiosulphate
⇦ on
or
Amazon [affil link]
/120 parts water solution- after that rinse it and lacquer it!
Goran Budija
metals conservator – Zagreb, Croatia
My cookie cutters are rusted; can I clean them?
Q. I HAVE A LOT OF COOKIE CUTTERS BUT THEY ARE RUSTED, CAN I CLEAN THEM OR SHOULD I THROW THEM AWAY?
Edda Contreras
COOKING CLASS TEACHER – San Diego California Usa
2007
A. If they are special to you, Edda, a plating shop can re-tin them for you. But due to the relatively low labor cost of making thousands of new cookie cutters at a time, and the high labor cost of replating a few on a onesy-twosy basis, replating your old ones will cost more than buying new. They are not dangerous (unless you cut yourself deeply with one), but they might stain the cookies I suppose.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
2007
A. Clean them with a scotchbrite pad
⇦ on
or
Amazon [affil link]
and a suspension of baking soda [in bulk on
or
Amazon [affil link]
and water. Lightly oil after cleaning and after each use.
James Watts
– Navarre, Florida
2007
Q. Can you spray paint metal cookie cutters? Is it safe? What kind of paint would you use? Ace Hardware recommended Rustoleum products.
Lisa Franck
– Appleton, Wisconsin
December 4, 2019
A. Hi Lisa. Most paints are not designed to be used as food contact surfaces. Rustoleum is not a type of paint but a brand name of lots of different types of paint, so it’s probably inaccurate to say that it is or isn’t food-safe.
I would suggest you use the search term “food-safe paint” or “food contact paint” or “food grade paint” and you will see very specific suggestions both from the companies that offer them and from regulatory authorities. Good luck!
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
December 2019