Heart necklace, when printed in temperature change plastic, will show others how that special someone will warm your heart. The 4 hearts inside a larger heart symbolize forever in love.Printed laying flat with exterior support material. Laying flat allows the hole to be formed stronger then standing up. 3 Shells at 0.10 layer height, with 10% infill. I used color changing plastic, it will change from green to yellow when warm. The loop for the necklace was made with a small peice of copper wire that was twisted, soldered to not be sharp, then tucked away in the hole. Pinching the loop to be more triangle shaped allows for the necklace to flow easier around the heart shape