2pcs 3D Printer Heated Bed Insulation Lightweight Foam Foil 220x220x5mm (8.66x8.66x0.2 inch) Self-Adhesive Insulation Mat Sticker Hotbed Thermal Pad for Ender 3 (220x220x5mm)

This was a well worth it upgrade for 8 bucks. My print bed heats up faster as well as uses less electricity. It was easy to throw on but the original adhesive struggles mildly in the corners so some hot glue may be needed. Seems like reasonable quality.

This print bed insulation sheet is about all I could ask for. It attached cleanly, keeps the print bed at a consistent temperature, and is low profile/unobtrusive. Do yourself a favor and get a set. You'll probably never need the second sheet, unless you get another printer! Awesome mod for the money.

So I have a Ender 3 Neo, and just starting out to modify my printer I found about these. These insulate your bed, so it’s a little faster to heat up but where it shines is that it traps the heat when cooling down. So with me being a perfectionist on my prints the constant heat really helps me save on energy. Most of all this being a 10-15 minute job it is a MUST for all 3d printer hobbyists.

put it on two of my printers and it cut the heat up time by less than half!

Replaced my faulty ended 3 s1 bed with a v3, immediately removed the 4 inch square of insulation and added this.Much better heating efficiency and uniform cover.Two small issues:1) a size 10mm on all sides bigger would be perfect.2) be careful with the y axis motor rubbing, and check for full motion, had to remove a 10x30 mm rectangle at back center to prevent dragging.

Works perfect on my double glass wall French press coffee makerIt keeps the coffee hot for ONE HOUR!!!

For years I had been using packing foam to keep my bed insulated. This fixes that issue and helps retain heat well across the bed. The adheasive backing comes right off and you put it on the bottom of your build plate. Cut small slits for your bed leveling screws to stick through and just press down and you're done. Just FYI there are quantity of 2 when you order this. I have 4 printers and I ordered 4 sets of insulation which gave me a total of 8 pads. ha. my fault for not having my glasses. I recommend this set.

These worked well on my Ender 3 however one of the pads had a big patch of the adhesive foam missing.