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Deltaprintr is taking pre-orders for a very interesting mini hotend. I've been following its development on the google delta group and Shai's + page. I preordered one today, it is inexpensive and very compact.

Note there is a 4-6 week lead time as these are being manufactured now. Not as risky as a kickstarter though!

mhackney wrote:Deltaprintr is taking pre-orders for a very interesting mini hotend. I've been following its development on the google delta group and Shai's + page. I preordered one today, it is inexpensive and very compact.

Note there is a 4-6 week lead time as these are being manufactured now. Not as risky as a kickstarter though!

Compact? That is the smallest hotend I have seen!
I will be following the printing characteristics of this one. I don't know how you find this stuff Michael but I appreciate it!
Something like this I will be watching but not buying until I read about how it performs. It would be great on a Kossel Mini.

I'm plugged in and frequently get asked for my input on things. There are some great videos on it printing. I do have to say, Shai haas been very open with development of this hot end and the testing he's done. He's even had thermal imagery done (I think he plans to publish this) and has done multiple iterations and tests. It might be one of the more real world tested hot ends before manufacturing.

I really like the top screw mount. I've had it with groove mounts. They are always problematic. I put a drop of medium CA on all my groove mounts to keep them in place.

Damn, that looks impressive.

One question - where and how does the thermistor mount?

From the list of features on the page linked above:

Thermistor mounted directly in the nozzle for more realistic temperature reading of the material as it comes out the hotend.


Also note: a sapphire nozzle is planned for abrasive materials.

They also have a nice but small printer which looks nice but it appears to be PLA only (no hotbed) and is too small for my needs but I can see it being a value for
the right market. It has the tiny hotend and runs a version of smoothieware on a board that I have never seen before and may not be open source. Price is in the
$400 - 500 range, the bed looks to be 4 to 5 inches in diameter which is why I called it a small printer.

[img]https://lh3.googleusercontent.com/-koBg ... IR0084.jpg[/img]

Here's one of the published thermal images.

mhackney wrote:From the list of features on the page linked above:

Thermistor mounted directly in the nozzle for more realistic temperature reading of the material as it comes out the hotend.


Also note: a sapphire nozzle is planned for abrasive materials.

This would be awesome. I love my Prometheus, but I can see some applications for this. too bad I haven't put all my quick-connects on yet

This looks great. I got their DeltaPrintr through the KickStarter campaign, and posted a review here. They may have improved it since then, but what I saw wasn't quite 100%. It's good to see that they're working on further innovations. It is a fairly clever design, although the lexan arms are flimsy and they have no cable management for the hot end wiring, so it just hangs slackly off the side. It is easier to build than a Rostock MAX (significantly less time). I haven't seen their Smoothie-based printer yet.

What I'd like to see is a mini-extruder based on one of the geared NEMA11 motors, ideally with the motor mounted vertically with a 90-degree transmission to drive the filament. (The motors are narrow, but LONG, and mounting them horizontally raises the possibility of interfering with the towers.) As small as these teeny tiny hot ends are, they could be coupled with small drive motors for a nice, lightweight platform. I2C servos could be used to raise and lower individual hot ends. You'd get as many discrete material channels as you wanted, and never have to worry about them dragging their nozzles.

I2C is not good in noisy envirovements

I'm using shielded robotics cable (designed to withstand continuous vibration and flexing) for all my stuff from now on, so EM resistance should be good.

Has anyone received and tested this hotend yet?

I got to meet a fellow from the company at a 3D printer show in NYC a few weeks back. I seem to recall him saying that the hot ends should be available sometime later this month.