[Revo] New hot end system from E3D?
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@zapta said in New hot end system from E3D?:
PTC elements are used in most hot glue guns, eliminating the need for active control system. As a result, they take much longer than needed to heat because the power reduction starts to take affect very early. Here, they are targeting higher temperatures and have active control system so may have a PTC with a much higher infliction temperature.
During my testing of PTC heated bed I found out that it is not true that it heats up slower and I tested just a few typed of PTC heaters. The heating curves can be very different from PTC to PTC and I hope E3D produces repeatable PTC heaters. I wanted one for my hotend for a long time.
Semirelater to heater, does anyone know why aren't they putting cables upwards but sideways? So that bend of a cable would happen away from the heater which seems like a no brainer to me...
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@akstrfn said in New hot end system from E3D?:
Semirelater to heater, does anyone know why aren't they putting cables upwards but sideways? So that bend of a cable would happen away from the heater which seems like a no brainer to me...
I don't understanmd what you're advocating - if the cable emerged upwards they'd need to immediately bend through 90 degrees with a radius of something like 5mm (maybe less) to clear the heatsink. Emerging as they do, they can be routed with a hundreds of millimetre bend if you want.
Or are you advocatinga cable passage cut through teh heatsink? Wouldn't taht potentially muck up air flows and risk chafing the cables?
https://www.youtube.com/watch?v=OXcZtnzuPuA has some views with the covers off - there's soem decent-looking strain relief built in.
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@jphilly I was at TCT today and spoke to E3D, they said the nozzle/heat break would be about £15 which I think it very good. It was so easy to swap them out and when you see one next to a traditional hot end the old style looks so clunky!
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@achrn heater with a bit bigger radius would allow for wires from it to emerge directly upwards and you could pack the wire at the back of the heatsink so no problem with airflow. If you look at a lot of hotend installations you will notice that they are bent immediately upwards (or even worse sideways) but luckily the wires are flexible however its still a reliable way to kill the heater if you often mess with the hotend. Actually I think that even v6 hotend install instructions had a warning about that but don't remember clearly... Another thing that I had problems with, is that during catastrophic failures (hits) hotend heater wires would get hit which would be much harder if they were upwards.
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@akstrfn said in New hot end system from E3D?:
@achrn heater with a bit bigger radius would allow for wires from it to emerge directly upwards
It would be a severe blow to sales if the new system did not fit within the outline of the V6.
I can see it being one of the design requirements that the new one fits entirely within the outline of the old one, which for a circular block mean limiting your diameter to the smaller plan dimension of the V6 block. It looks like they've done that (or very nearly so) but making the block diameter sufficient to clear the heatsink really wouldn't. I imagine a lot of people that might change the hot end if it's just swapping the hotend would be less likely to do so if it required a phyiscal redesign of the printhead.
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i'm more interested in those new nozzles
https://www.youtube.com/watch?v=ShpLnIFpAhwmy nozzle x is holding up pretty good though.
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@achrn said in New hot end system from E3D?:
It would be a severe blow to sales if the new system did not fit within the outline of the V6.
They could clone the Slice's design of a removeable grove mount adapter
https://www.sliceengineering.com/collections/accessories/products/groove-mount-adapter
This will allow backward compatible groove mount and a more modern screw mount.
Personally I would be happy to see the groove mount and the 'hugging' style heatsink fan-mount going away.
What I like about the new design is the round and compact heat element which leaves more clearance to adjacent ducts and other accessories.
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@hackinistrator said in New hot end system from E3D?:
interested in those new nozzles
sounds interesting. He talked about a partner, maybe this one: https://www.championx.com/products-and-solutions/drilling-technologies/diamondback-nozzles/ which is a Kickstarter, but the company itself is very old.
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@blacksheep99 said in New hot end system from E3D?:
It was so easy to swap them out
Their tool changer idea didn't create a new trend and I am not sure if the integrated Hemera did, but maybe this approach for changing will. Time will tell.
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Apparently E3D worked with the Voron team on a Voron Revo version which is red and also have top screws mount, similar to the Dragon and Mosquito hot ends. This version will not come with a fan because Voron has its own hotend fan assembly.
https://www.youtube.com/watch?v=bLsBjfE5DY4
Since Slice Engineering enforced their patent, the Voron team boycout the Mosquito (e.g. dropped from the PIF program) but they seem to be OK with E3D patent strategy.
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@zapta The Revo coldend situation is less of a pickle than the proprietary hotends produced by RUNICE/phaetus under various names, or the Mosquito situation. E3D has a decade of history of building within an open ecosystem. In their blogpost about patents and the Revo they explicitly encourage people to develop cold-end alternatives. It bears noting that little interest has developed in the larger community towards the CC-BY-SA licensed Copperhead design (last I heard it's not competitive on flow, and no-one seems to be interested in iterating on it).
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@oliof said in New hot end system from E3D?:
In their blogpost about patents and the Revo they explicitly encourage people to develop cold-end alternatives.
The main difference I see with Slice is that E3D did better PR or are more likable for historic reason. E3D now use legal means to stay the only seller of the heaters, thermistors, and nozzles for their eco system, so allowing people to customize the mechanical interfaces to their machines ('cold end' as they call it) doesn't sound too generous.
Will be interesting to see what creative workarounds China will come with. Personally I am waiting for the Voron Revo, it will be a good fit for my needs.
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If anybody is configuring a Revo, E3D recommendations are below.
Since the Voron version didn't come out yet (it mounted using screws, my preferred method), I got the Revo Micro and it seems to work (still testing). I like the small size of the heater because it leaves more clearance between the heather and the air ducts. Also, I expect the silicon sock to hold better than the one I used on a V6 block and had to adjust often.
B4725 C7.060000e-8https://e3d-online.zendesk.com/hc/en-us/articles/4409926923665-Revo-Six-RepRap-Firmware-Guide
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@zapta said in New hot end system from E3D?:
I expect the silicon sock to hold better than the one I used on a V6 block and had to adjust often.
I used a piece of stainless steel crafting wire to tie around the sock and hold it snugly in place. Never had an issue with it after doing that.
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@phaedrux said in New hot end system from E3D?:
I used a piece of stainless steel crafting wire to tie around the sock and hold it snugly in place. Never had an issue with it after doing that.
Thanks @Phaedrux, I will remember it next time. I also considered molding my own silicon sock as other did on youtube but never get to it.
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CNC Kitchen just released a video in which he shows that the Revo's temperature stability is more sensitive to the cooling fan than V6. Has to do with the structure of its heating core.
