Foxnovo Creality CR-10 3D Printer Fully Assembled DIY Kit, Aluminium, Large Print Size 300X300X400mm with heated bed <span class="a-text-bold"><u>Usefulness:</u></span> The hot bed is a unique accessory for FDM printers, the main purpose is to prevent curling. <span class="a-text-bold"><u>Why:</u></span> So what is the reason for the curling? The curling is caused by the cooling shrinkage of the material. The shrinkage rates of different materials are different, so the degree of warping is also different, but one thing is certain, the curling is inevitable. what we can do is to mitigate the influence of the curling. <span class="a-text-bold"><u>Note:</u></span> Some users say, &#034;I use PLA materials to print, so I don&#039;t need to use a hot bed.&#034; Wrong, Same type of material from different manufacturers, the degree also is different, some of the warping is not obvious, and some are serious. Most of the desktop 3D printer of FDM technology are under 250mm, and the Creality CR-10 can reach 300*300*400mm. Printing Size: 11.8&#034; x 11.8&#034; x 15.8&#034; ( 300x 300 x 400mm) Machine size: 490 x 600 x 615 mm Machine net weight: 10.3kg Package size: 540 x 640 x 310 mm Package weight: 14kg So you can print by SD card (off-line), contact to the PC (on-line) to print. You can download many sample files from webs to start your print. Operating system: Linux, Windows, Mac Software supporting: PROE, Solid-works, UG, 3d Max, Rhino 3D design software, etc. Layers Software: CURA, Repetier-Host, Simplify 3D Operating page: Chinese / English Package 1x CR-10 3D Printer 1x PLA Filament 1x 8GB SD card (the user manual is in SD card) 1x Assembly instructions and user manual. Spare screws and Wrench kits