How to use heated Multi-Etch

We recommend using Multi-Etch heated because it’s MUCH faster.

Our detailed instructions are aimed at small users trying out titanium etching and anodizing for the first time. But the principles are the same for larger users with a dedicated production line, similar to those made by IPEC Global.

Your first order will come with a bag of powdered Multi-Etch and a jug. This jug is extra robust and perfect for mixing and storing Multi-Etch for your first and future orders. Always use plastic for using and storing Multi-Etch, never metal or glass.

In subsequent orders you will receive just the bag of Multi-Etch Powder. Because the ingredients are not blended, you must mix the entire package.

An example of a small anodizing lab set-up.

An example of a small anodizing lab set-up, with a double boiler beneath a fume hood, jug of Multi-Etch, a rinse bowl, cleaning solution, anodizing machine next to anodizing bath, bowl for anodizing rinse and a storage tank marked for de-ionized or distilled water.


Chris Boothe wearing safety goggles, safety gloves, and a lab coat.

Chris Boothe wearing safety goggles, safety gloves, and a lab coat.

Step 1:

Set up your etching equipment near your fume hood. Possible set-up is outlined in the above picture and alternative simple double boilers are shown below. Once the set up is complete, you can put on your protective gear: Safety goggles, gloves and a lab coat!

Simple double boilers: for the inner container that holds the Multi-Etch, use plastics marked 5 or sometimes 7 that can withstand the heat. The outer container that just holds water can be made of metal or ceramic. But NEVER USE METAL OR GLASS FOR THE INNER CONTAINER THAT HOLDS THE MULTI-ETCH because metal and glass will both etch slowly and the glass will eventually break.

Inner containers made of plastics marked 5 or 7 should be OK sitting right on the bottom of the outer container but if you want to be extra cautious, line the bottom of the outer container with pebbles or some kind of baffling screen.

Crock-pot with plastic container placed inside for a double-boiler set-up.

Crock-pot with plastic container placed inside for a double-boiler set-up.

Simple Double Boilers

A metal bowl with rocks in the bottom placed on a heating unit. A plastic container in placed in the middle of the bowl to create a double boiler.

A metal bowl with rocks in the bottom placed on a heating unit. A plastic container in placed in the middle of the bowl to create a double boiler.

Side view of double boiler made with metal container, plastic container and hot plate.

Side view of double boiler made with metal container, plastic container and hot plate.


Black funnel placed on table with skinny end facing up.
A jug of distilled water.

Step 2:

Prepare your Multi-Etch for use. Add the Multi-Etch powder and water with the help of a funnel. For regular strength, you will add one gallon of de-ionized or distilled water; for double strength, add 1/2 gallon. Shake vigorously and leave overnight, or, if using sooner, shake again right before use.


Step 3:

At this stage turn on your fume hood. Pour into a double boiler only as much Multi-Etch as you need for this session, keeping the rest capped in the bottle. Heat until you see fine bubbles, or the temperature of Multi-Etch is 125-150°F.

While waiting for the Multi-Etch solution to reach desired temperature, clean your titanium parts with Simple Green.

Double boiler placed beneath a fume hood in laboratory.

Anodizing machine set-up next to a bucket of clear liquid labeled anodizing bath.

Step 4:

Swish or swirl your titanium pieces in Multi-Etch for 7-10 seconds. If your holder will touch the heated Multi-Etch, make sure it’s made of plastic, titanium, or niobium.

Rinse in distilled or de-ionized water.

Anodize right away or store in distilled or de-ionized water to prevent re-formation of the natural oxide layer.

For more guides, check out our resource videos !


We hope these steps helped you use our amazing product! If you had any issues please check out our Frequently Asked Questions or feel free to contact us with any concerns.