Multi Etch

Etch Titanium Now, Anodize Later

Sometimes it’s handy to prepare a titanium piece with Multi-Etch and then protect the piece in a way that allows you to set it aside and anodize later. 

One simple way is to Multi-Etch the piece, rinse, and then store in a tank of DI or distilled water. We’ve found this lasts at least 2-3 days, and probably longer. 

A second way is to Multi-Etch and then “base coat” your titanium part with 8-10 volts. Those parts can then be stored dry and the base coating will protect the piece for a long time.  We’ve stored pieces that way for years and been able to anodize them in the same brilliant colors we can produce when we are working with freshly Multi-Etched pieces. The only drawback with base-coating is that there will be a light tan on the piece, so if you need part of the piece to remain the natural color of titanium, base coating won’t work for you.

A third way that works on flat pieces is to Multi-Etch the piece and then cover and apply anodizers’ tape on the flat piece, burnishing thoroughly to make sure you cover the whole piece completely. You should cut the tape big enough to fold over the edges.

The concept with these three methods is to prevent the formation of the oxide layer that Multi-Etch is designed to remove.

Happy anodizing!


Plastics to use with Multi-Etch

We often stress the importance of using and storing Multi-Etch in plastic containers, never in metal or glass. First time users will receive dry Multi-Etch powder in a plastic gallon jug. This jug is meant to have distilled or deionized water added to make a gallon of regular strength or 1/2 gallon of double strength Multi-Etch. You can pour 150–160°F water into the jug to mix the solution.

multi etc h in white plastic buckets.jpg

When using heated Multi-Etch in either a double boiler or in a custom tank, there are a number of types of plastics that can be used. For small users (one gallon or less,) you can find suitable plastic containers at big box or grocery stores. Look on the bottom of containers to see a number inside a triangle. Most of these containers will have a number 5, for polypropylene. These can withstand up to at least 212°F.

5 recycle symbol

For those of you building your own containers, several other plastics besides #5 can be used:

#2 white polyethylene can be heated to 160°F. This is what our Multi-Etch jugs are made of.

#3 PVC--upper thermal limits are 140°F for type 1 and 158°F for type 2

#7 is usually polycarbonate and can be heated to 212°F but #7 does include other plastics so sometimes means a type other than polycarbonate.

If you will run larger tanks of 5-20 gallons, we recommend IPEC Global who can construct complete customized systems which can include tanks for cleaning, rinsing, Multi-Etching, rinsing, and anodizing. 

Check them out here and see videos of their systems here.

We welcome your questions and comments about plastics compatible with Multi-Etch. Click here for our video which describes containers used with double boilers.


Looking for Multi-Etch Distributors Outside North America

Looking for Multi-Etch Distributors Outside North America

We are pleased to announce that Multi-Etch is now available in Australia! Our newest distributor is Nick Hacko Fine Watches.

Besides Australia, Multi-Etch has distributors in the U.S. and Canada. We regularly get requests to ship Multi-Etch outside the U.S., including to many European countries. How we wish we could send it to everyone who asks! The problem is that even though Multi-Etch is vastly safer than the industry standard of hydrofluoric and nitric acids, Multi-Etch is still considered a hazardous material. Because of that, there is a burdensome amount of paperwork that must be completed and filed with every shipment that leaves the U.S. and for that reason, shipping expensive.

We have a minimum requirement of 100 units of Multi-Etch for shipments leaving the US. Each unit makes one gallon of regular strength or 1/2 gallon of double-strength Multi-Etch. Most of the shipping cost is due to the paperwork and required licenses associated with shipping hazardous materials. So the more product you buy, the less per unit shipping will cost.

If you are a company already selling jewelry supplies, metal-working supplies, or industrial cleaning products, contact us for how you could add Multi-Etch to your product selection.

Contact us at or 928-634-5307 for more information.

Welcome to the Multi-Etch Blog!

Etching Titanium & Other Metals

Wondering if Multi-Etch will work with your process? Or, do you need to know specific details about how to use Multi-Etch? This is the place to ask those questions and get some answers. You can start a discussion and hear what others are experiencing. We’ll address your questions and ask some of our own to get conversations going as well as post articles of interest.

Join others in the dental, medical, jewelry, aerospace, and consumer product industries who have switched from using dangerous acids like Hydrofluoric, or never wanted those hazards in their work life in the first place and chose the safe route for etching titanium and other metals.

The danger of working with hydrofluoric acid has been in the news lately following the huge explosion at an oil refinery in Philadelphia. A article reports:

“A source familiar with plant operations said one explosion occurred at the 30,000 bpd alkylation unit that uses hydrofluoric acid (HF), one of the deadliest chemicals in the refining business and a source of controversy for its use to make high-octane gasoline at refineries located in densely populated areas.

“Hydrofluoric acid can form a toxic cloud at room temperature, with exposure leading to severe health problems and even death.”

Click the button below to read the full article:

So stay safe with Multi-Etch and subscribe to get notifications of new entries or just check back once in awhile to see what others are talking about. Have a question? Leave a comment below! Let’s get going!