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idea for a heatbed !

Posted by Elidor 
idea for a heatbed !
March 13, 2012 04:51PM
cover aluminium plate with kapton tape for insolation

take nichrome wire make in a spiral shape ( more heat generated )

place on platform put thermisitor on the center of the plate

place 4 or 5 mm glass on platform

what do you guys think about it ?

there is a simple way to calculate the power vs temperature

thanks =)
Re: idea for a heatbed !
March 13, 2012 06:41PM
I just bolt on housed resistors I use 4 at 2.2 ohm running off 12V which gives me a nice even temp of 55C for PLA and yes I fix a thermistor in the middle of the aluminium plate using heat proof silicone and Kapton tape

Experimenting in 3D in New Zealand
Re: idea for a heatbed !
March 14, 2012 03:33AM
Seems it has been tried. Pretty sure I have seen it a few places


I use 9 10ohm aluminum resistors in parallel (new printer uses 10 but that puts it over the current RAMPS 1.4 can handle so I use a relay). It has no problem hitting 135c for abs. That is with a 5mm aluminum bed and 3mm of glass also.
It is a direct copy of Arcol's bed.

I have pics of it on my flickr.

www.Robosprout.com RepRap Mendel parts and accessories.
Message if there is anything you need...I have more than what is listed on my site.
Located in the Spokane, WA / Coeur d'Alene, ID area.
Contact: Robosprout@gmail.com Flickr: [www.flickr.com]
Re: idea for a heatbed !
March 14, 2012 04:47AM
Elidor - I think what you are describing has been done a few times:

Adrians version: [reprap.org]
Some more heated beds: [reprap.development-tracker.info]
Also, Nophead did a lot of research into this: [hydraraptor.blogspot.com]

My attempt: [garyhodgson.com]

I actually don't use glass, rather I put green PET tape directly on the aluminium and print on that - so far it seems to work, but I only set the bed to ~55°C


garyhodgson.com/reprap | reprap.development-tracker.info | thingtracker.net
Re: idea for a heatbed !
March 14, 2012 06:28AM
I've made a couple of heated beds with uninsulated nichrome under dibond fr. They work very well with PLA @~45-70C, but is a bit fiddly to put together.

Blog with RepRap Comic
Re: idea for a heatbed !
March 14, 2012 08:09AM

thank alot ...

im just trying to design a really chip flat heatbed but i guess the easy way is better =)

after a really long couple of months im starting my site by next week ill wil be selling a orca 030 and pursa parts and complete sets ...yeeyyy

im all so waiting for prices on silicon heaters.... ireally what do use a glass on my bed for nice even surface and im tring to make the printer a few

cm lower for more compact size for orca 030

all so for direct filament drive im not using springs and it working great .

im sorry if it sound stupid im only trying =)))))
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