Whatever mat and machine you are using put your htv glossy side down onto your mat so you will be cutting on the matte side see image below.
How to use a heat mat.
The tank is then place on top.
The cricut cutting mats are really similar and i have used cricut mats with my silhouette.
Fill a seedling tray with a quality potting mix.
Be patient as it may take a couple of days for the mat to warm the soil especially with deep.
Remember we are cutting on back side of the vinyl where the heat sensitive adhesive is.
Some heat mats for plants even have thermostats to adjust the heat.
This side will be.
Heat mats which use very little electricity produce gentle consistent heat.
Since a heat mat can be pricey at 30 50 you want it to grow with you because maybe next year your garden will be twice the size.
If you are positioning it at the bottom then the heat mat should sit on a polystyrene base the same dimensions as the base of tank.
If you are using a glass or plastic tank then the heat mat is placed outside the tank.
How to use a heat mat.
Seed mats come in many sizes but i always suggest to size up.
Use a soil less mix as it is sterile and made up of finer particles which makes it easier for the seedlings to sprout through.
To make sure the mat is accurate we also use an extra thermometer that gets inserted directly into the soil.
How to use a thermometer for seedlings.