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Heatbed Heater Options
I'm in the process of doing some much needed upgrades to my printer's heatbed, and I'm trying to workout my best option. The existing heated bed was done with 4 x 4.7R power resistors (aluclad type)...
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I don't know any suppliers of 300x300mm heater PCBs. Why not use one or more undersize silicone heaters and an aluminium heat spreader plate? I found some inexpensive 12V 100W 235x100mm silicone...
View ArticleRe: Heatbed Heater Options
I've come across a few. Apart from the ones on aliexpress, I have a few shops bookmarked on my laptop, but it'll be tomorrow before I can get at them. The silicone ones, although they seem to be good...
View ArticleRe: Heatbed Heater Options
you should go to i higher voltage, as the Rumba mosfet also supports higher voltages on the Board-switch, this will reduce your ampere taken from the board. with such a large bed you should at least...
View ArticleRe: Proper Resistance of a Heated Bed
Thank you for those answers. Sorry I am slow to reply. The PDF shows a trip rating of 18.7A beside the 11A holding rating. So the fuse would trip at 18.7A? But I assume it would not trip instantly at...
View ArticleRe: RADDS RepRap Arduino-Due Driver Shield (32bit)
Hi rdm128 , hi Doug, the Fullgraphic-Display ist very slow (reaction...), but it is working in most Installations. I have not make it, but the reprapers told me, that it is only nessesary to adapt the...
View ArticleRe: Heatbed Heater Options
Quotetwicx The silicone ones, although they seem to be good solutions, they seem messy between relays and using mosfets etc. You are likely to need an external mosfet with ANY heater solution for a...
View ArticleRe: Proper Resistance of a Heated Bed
QuoteGarry Bartsch The PDF shows a trip rating of 18.7A beside the 11A holding rating. So the fuse would trip at 18.7A? But I assume it would not trip instantly at this amperage due to it's...
View ArticleRe: Heatbed Heater Options
So by the sounds of it, I'm going to need something between the Rumba, the power supply and the heater(s). This makes it tricky. The first problem is the mounting points. Because of the design of how...
View ArticleRe: Heatbed Heater Options
Quotetwicx So by the sounds of it, I'm going to need something between the Rumba, the power supply and the heater(s). This makes it tricky. The first problem is the mounting points. Because of the...
View ArticleRe: Heatbed Heater Options
Quotedougal1957 Quotetwicx So by the sounds of it, I'm going to need something between the Rumba, the power supply and the heater(s). This makes it tricky. The first problem is the mounting points....
View ArticleRe: Heatbed Heater Options
Although those Fotek DC-DC SSRs are easy to wire up, unfortunately they have quite a high maximum voltage drop (1.6V, see [www.fotek.com.hk]) and hence there will be a lot of heat to get rid off. You...
View ArticleRe: Heatbed Heater Options
Quotedc42 Although those Fotek DC-DC SSRs are easy to wire up, unfortunately they have quite a high maximum voltage drop (1.6V, see [www.fotek.com.hk]) and hence there will be a lot of heat to get rid...
View ArticleMelzi USB interference
Hi all, I've got some strange problems with my Melzi board. I've tried several USB cables but I only got a connection with a 20 cm cable. I can connect to the printer and everything works as supposed...
View ArticleRe: Proper Resistance of a Heated Bed
Yes better screw terminals can be soldered to RAMPS. The ones that ship with many boards are the cheaper end of the spectrum. Note: I've successfully used Phoenix removable screw connectors (the...
View ArticleRe: Melzi USB interference
The USB cable is probably creating a ground loop when you connect it. Here are a couple of things to try: 1. Put a ferrite bead around the USB cable. 2. Power the printer and the PC from the same...
View ArticleRe: Melzi USB interference
Thank you for your suggestions 1. The short 20 cm cable got a ferrite bead, the other doesn't. 2. I've only tried another outlet but they are using the same fuse and that made no difference.
View ArticleRe: Hot end suddenly not heating up
I agree - it sounds like a poor connection, especially when you said you think you touched something and the hotend worked.
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