I had been planning on making a resin Petri dish for my friend to gift her on her birthday. So I thought of making a step-by-step tutorial to share with you all too.

This will give you a fair idea of how to make your own petri dish, and what materials you can use as a base for the same.

If you have landed on this page, I am assuming you are a curious, creative human who is willing to learn to create as many different things with resin. So, let’s start!

making a petri dish introduction

Making a Petri Dish – Indeed, A Useful Gift Idea

A petri dish can be used to keep jewellery on your dressing table. It can also be used to place soap dispenser in your bathroom. There are a lot of ways you can utilize petri dishes at home. Be creative when working with resin. Find new styles and colour combos to make a DIY petri dish for your home and also to gift your loved ones.

DIY MAKING A RESIN PETRIDISH

Different Materials You Can Use for Making a Resin Petri Dish

There are different base materials you can use for making a resin petri dish. Most commonly used are the silicon molds that are available in numerous shapes, like – square, rectangle, hexagon and round.

Petri Dish Silicon Mold – Available in various shapes and sizes
Wood/MDF
A Plastic Lid

For this tutorial, I have used silicon mold that I bought from Amazon. You can use any of the above-mentioned bases that you like. These are readily available on Amazon.

Making a Resin Petri Dish – Epoxy Resin DIY Tips

Epoxy resin is a chemical that comes in two components, part A is Resin and part B is Hardener. Mix part A and part B either by volume or by weight as mentioned on the label instructions.

All epoxy resin brands mix in different ratios. To know the ratio of mixing (1:1, 2:1, or 3:1) resin and hardener read the instructions on your epoxy resin bottle label carefully. If the mixing ratio is altered it might result in an uncured resin piece.

For making a resin petri dish I used a new Indian epoxy resin brand RAI Resin Art India. The epoxy comes in 2 types. One which is a thick consistency and is mixed in the ratio of 2 (parts resin):1 (part hardener). It has a short pot-life and gives a working time of nearly 30 minutes. The curing time of this resin is 24 hours.

Another type is a thin consistency that is mixed in the ratio of 3 (parts resin):1 (part hardener). It has a longer pot-life and gives a working time of 35 to 40 minutes. For a beginner’s level, I would suggest using any brand with a mixing ratio of 3:1 to give you more working time.

Learn How to Calculate the Amount of Resin Required for Making a Resin Petri Dish

If you do not know how much resin you’ll need for your resin project, there are a few resin calculators available online. You can easily calculate the amount of resin needed by putting the dimensions of the base you are using.

I have been working with resin for nearly a year now so I pour the resin in proximity. If there is any resin left I use it to cast another mold simultaneously. So, it is always a good idea to keep small molds handy for any leftover resin to avoid wastage.

Making a Resin Petri Dish – Safety Tips Before You Begin Working With Epoxy Resin 

Epoxy resin is a chemical. It emits harmful fumes and some cheap quality resins have a pungent smell too. So you have to be careful when working with epoxy resin. Here are a few things to keep in mind before you begin your epoxy resin project:

Have a separate room or area designated for resin work where kids should not be allowed.
Work in a ventilated room.
Do not work outside as dust particles can stick to the resin and are not easy to remove.
Epoxy resin is a chemical and emits harmful fumes and cheap quality resin has a pungent smell.
Always wear a mask and latex gloves before you begin working on your epoxy resin project.
Epoxy resin art is expensive art. Never buy cheap quality resin as it can have health hazards.
Epoxy resin does not give you time to alter your design while working. So spend more time planning the project than you would on execution.
Epoxy resin has a pot life of 30 to 40 minutes. This means you only have nearly 35 minutes to use the ready resin mixture.
Lastly, epoxy resin can get messy. So always cover your work area with three layers of newspaper and a plastic sheet on top of it. Or any old bed sheet that’s readily available at home.

Now that we know that working with epoxy resin at home is safe and easy. Let’s get you started.

A Quick List Of Materials Required For Making Resin Petri Dish

The materials listed here are easily available on Amazon. It is easy to order and supplies are reasonably priced.

Epoxy Resin – RAI (Resin Art India)
Silicon Mold – Petri Dish
Pigments
Glitter and Chunks / Gold Foil  (optional)
Mask and Latex Gloves
Disposable Plastic Cups
Ice-cream Sticks to Stir
Electronic Digital Weighing Scale
Hair Dryer

materials required for making resin petri dish

Set Up Your Work Area

Bring all the supplies that you need in your work area. Set up your workplace before you begin your resin pour. Once you start working with resin it would be difficult for you to leave it in between to grab things.

step-1-gather-all-material

Wear Mask and Gloves

Always wear a mask and latex gloves before you start any of your epoxy resin projects. Epoxy resin has a pungent smell and emits fumes that can have health hazards. It is also advisable to wear eyeglasses to protect your eyes. If resin drops on the skin, it can cause itching and rashes. So, it is good to keep your hands covered in gloves.

Mixing Epoxy Resin and Hardener

If the weather in your area is cold and you still plan to work with epoxy, warm your resin with a warm water bath prior to mixing. This helps get the resin at a workable temperature.

Read the label instructions on your epoxy resin bottle. And mix the resin (part A) and hardener (part B) in the ratio mentioned. I am using a 2:1 epoxy. So I have mixed 2 parts resin and 1 part hardener, and I let it sit for 3 minutes. It allows the bubbles to set in. Stir the mixture using an ice-cream stick. Scrape the sides thoroughly.

step-3-mixing-epoxy-resin

Add Pigments to Resin Mixture

Pour half resin mixture into another disposable cup. Add the desired pigment to each cup of the resin mixture. I am using Red and Haldi Yellow.

step 4 add pigments

Pouring the Clear Resin

Pour clear resin on the silicon mold. Use hairdryer to pop up the bubbles. Sprinkle the gold foil over the clear resin and let it settle. Use an ice-cream stick to dip the gold foil in the resin that rises above the epoxy.

step 5 pour clear resin

step 6 sprinkle gold foil

Adding the Colored Resin Pour

Add haldi yellow resin pour mix from one end. Then add red resin pour mix from the other end. Use a hair dryer to pop up the bubbles.

pour yellow resin

step 7 pour red resin mix

Cover the Petri Dish and Set Aside to Cure for 24 Hours

Once you finish pouring resin in the mold, let it sit uncovered for half-an-hour. Keep a watch for any bubbles. Sometimes bubbles pop up due to lack of air if you cover your work immediately.

After 30 to 40 minutes cover your petri dish with a net or shoe box. This does not let dust particles or dirt settle on the resin surface. Leave it sit to cure for 24 hours.

Voila! My Petri Dish is Cured and Ready to Use

finally cured resin petri dish

Various ways in which you can use the Petri Dish

Check out the video tutorial for making a resin petri dish.

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Hope this step-by-step tutorial will give you more ideas to start working on your DIY petri dish.

Make your own unique and beautiful designs. Do share pictures of your resin petri dish in the comments below.