Quote:Seems expensive since the OEM replacement from XYZ (including the thermistor and plastic bed) is $60. What justifies the additional cost? Also, is the heater adhered better than in the picture? The air bubbles can cause uneven heating and damage the heating element.
Thanks for the comment.
Yes it is a little expensive compared to other 3D printer heated beds although it is less than the original XYZ replacement. Not to mention that they never have them in stock.
When I called for a replacement I was quoted "For the heated bed, we sell the whole Z-axis platform with the bed and it is priced at $100.00+tax(if applicable)+shipping."
First off, the glass is Borosilicate where as the original is cheap glass that flakes and cracks very easy. Both of mine flaked within 30 days of purchase. One cracked completely rendering the printer useless.
I looked at Borosilicate glass from China and the price would have been less but instead I decided on the Borofloat brand as it is very high quality glass made in Germany.
Borosilicate glass has a low expansion coefficient and does not develop the stresses that flake and crack normal glass. So the heated bed should last much longer if not for the rest of the printer's life.
Secondly, the heater is made by the same company that makes the heater for XYZ Printing. Same quality and is the latest design from them.
The heater does have some spots where it does not fully contact the glass. If you look at the original heater, it has the same problem. (see photo of my original glass)
The reason for it is that the heater is not flat and will not lay flat on the glass because it does not stretch. I have tried many different "tricks" to get the heater to lay flat including vacuum bagging, heating it before applying, ironing it down and multiple methods of fixing it to the glass. Bottom line is that the heater is not flat and will not lay flat on the glass. The "bubbles" look worse than they are due to the lighting angle.
As far as damaging the heater. I have not seen it on my printers and both of them have the same "bubbles". The theory sounds good but I would not pass judgement without solid proof that the heater will be damaged.
As far as uneven heating of the glass. That is the main reason for using Borosilicate glass, it can take the uneven heating without developing stresses.
In the end my product is superior to the original equipment and sells for less.