Re: Slow heating up on MK3 dual power heat bed:S
I glued a cork board under the MK3 heatbed and it went up to 90°C after about 30 minutes. I am currently testing another power supply. This one has 150W and 15A on the 12v rail. Measuring says it has...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
With the new power supply it went up to 90°C after 30 minutes again. So with both power supplies I got the same result. Any ideas ?
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
What size wires go to the bed? 16Ga wires are not enough. I used two 16ga and while it worked, it wasn't great. I switched to 14 and while it heated fast, it eventually killed the PSU because it drew...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
1) Put cork or (corrogated cardboard for testing) under the bed for insulation. 2) Put a plastic-wrapped magazine on the glass for insulation as it warms up. 3) Buy an SSR relay and 24V power supply....
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
Heat beds are always problematic. Thoughts from me: 1. What voltage do you get on the following places with the heatbed off (referenced to Gnd on the PSU input to the RAMPS 11A connector): a. 11A PSU...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
Quotesheepdog43What size wires go to the bed? 16Ga wires are not enough. I used two 16ga and while it worked, it wasn't great. I switched to 14 and while it heated fast,It changed because you wanted...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
Thanks guys for all the good information ! Really appreciate your knowledge sharing ! QuoteCefiar 1. What voltage do you get on the following places with the heatbed off (referenced to Gnd on the PSU...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
I changed the wires from 21 AWG (0,75mm²) to 16AWG (1.767mm²). The heatbed has a resistance of 1.9 ohm. On the pads directly on heatbed I measure 11.99 V. The temperature increases in 0.5°C steps....
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
QuoteianmcmillI am using ordinary ceiling lamp wires (german ones with 3 braided wire). They are 0.75mm² which is like something inbetween AWG 20-21. Maybe they are too thin ?.75mm is inbetween 18 and...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
Quotecdru QuoteianmcmillI am using ordinary ceiling lamp wires (german ones with 3 braided wire). They are 0.75mm² which is like something inbetween AWG 20-21. Maybe they are too thin ?.75mm is...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
The issue with thin wire tends to be that as it passes current, it heats up and as it heats up, the resistance goes up slowly, not by much, but after a while it becomes a limiting effect. FWIW: I...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
QuoteianmcmillThe heatbed has 1.9 ohm resistance. 0.3 more than they say in the datasheet.Get a better heater. Compared to spec, you're heated bed is producing up to 25% less heat than it's suppose...
View ArticleDuet + Duex = happiness?
Because I can order things on the internet faster than my brain can veto them, I have a Kraken 4 hotend and a Duet with extension board to run it. I've not seen a great deal about the Duet or the...
View ArticleMelzi on a budget?
I am in the process of building the "sturdy" version of the Mendel90, using MDF for the frame and 10mm smooth/8mm threaded rods - this will be my first RepRap, and my first hands-on experience with...
View ArticleRe: Slow heating up on MK3 dual power heat bed:S
I ordered the heatbed here [www.cubic-print.com] It's B-stock with just one little scratch on the alu surface. The tracers are fine. The seller does not give specs but links the reprap wiki site of...
View ArticleRe: Duet + Duex = happiness?
Hi Ulktan I take it you have seen my blog post :D [blog.think3dprint3d.com] Cheers Tony
View ArticleRe: Duet + Duex = happiness?
QuoteT3P3 Hi Ulktan I take it you have seen my blog post :D [blog.think3dprint3d.com] Cheers Tony I have now :) Very informative :) Would be interesting to see the Kraken crossed with your mini...
View ArticleRe: Melzi on a budget?
Any electronics works with any printer. Buying cheap means you don't want to support open source developers, so you're on your own.
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