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Messages - hackerdaz

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1
General Discussion / Re: Heat bed connector cable crimps
« on: May 19, 2017, 10:12:41 AM »
Found the info on zortrax forum. Thanks!

2
General Discussion / Heat bed connector cable crimps
« on: May 19, 2017, 05:57:35 AM »
Does anyone know the size of the crimps which are used in the large connector?

3
Materials Compatibility / Re: Mechanical strength of various materials
« on: April 24, 2017, 07:32:28 AM »
I have all the required data to prepare a stress-strain diagram. I will upload it when it is ready. :)

4
Materials Compatibility / Re: Mechanical strength of various materials
« on: April 23, 2017, 08:33:49 AM »
The initial length is between 10 and 12mm, depending on the way that the extensometer was attached to the specimen.

5
Materials Compatibility / Re: Mechanical strength of various materials
« on: April 18, 2017, 05:10:21 PM »
It would not be possible to conduct such a research without z-temp, since the majority of the tested materials cannot be used with the stock v2 hotend.
I have finished the data analysis of the impact experiments. Cylindrical specimens with a diameter of 20mm and height 30mm were tested against impact loading. The velocity of the drop weight speed maintained constant at 4.6 m/s. In the following diagram the impact energy absorbance, as well as maximum impact force, are presented.
Specimen #, Material
1, CFPLA
2, Longchain
3, PLA/PHA
4, PCPLUS
5, Polymax
6, GWPP
7, Carbonium
8, ZGlass
9, Black Magic

6
Materials Compatibility / Re: Mechanical strength of various materials
« on: April 10, 2017, 10:45:28 AM »
Since it is an ongoing investigation, layer height effect will be considered at a later time. Up to now, I focused on the energy absorbance during impact loading.
The results of this post show the suitability of the specific materials for engineering applications considering deformation. I will also upload the impact characteristics of these materials.
I agree with you that thicker layers should have better interlayer adhesion due to higher thermal energy, so I'm trying to find a normative that tests layered material delamination, in order to quantify the effect, but I haven't come to a conclusion yet.

7
Materials Compatibility / Mechanical strength of various materials
« on: April 09, 2017, 01:53:40 PM »
Posting results from tensile tests for 8 materials, mainly filled or modified. Tensile specimens printed using m200, 0.19 height, high infill. Tested but not shown is Black Magic (graphene filled), difficult to print, had to preheat the filament in order to use it without breaking, but in terms of mechanical strength is around 0.7kN at 1mm of displacement, then it brakes. The middle cross-section of the specimens is 4X10mm^2.

8
RaftAway / Re: v1.1.4 released
« on: March 25, 2017, 05:58:49 AM »
What settings and material?
I had tested from 125 to 500+% with .19 and .39 layer heights with z-abs, normal speed, low infill. Version 1.8.1 and 1.8.2

ABS, 140%, 0.19 height, high infill, normal speed, ver. 1.7.x., currently v2 hot end (managed to destroy the threads of two z-temp hot ends). Thought there was a connection problem with the thermistor cable, but could not trigger an error when manually shaking the cables. Trying a 24h printing with 125% to see what will happen. After 14h keeps printing fine.

9
RaftAway / Re: v1.1.4 released
« on: March 23, 2017, 03:27:30 PM »
I don't use 1.8, but I do have a double fan setup. And indeed, the error triggered when the fans were switched on.

10
RaftAway / Re: v1.1.4 released
« on: March 23, 2017, 01:40:51 PM »
Has anyone experienced a sudden temperature drop error triggered when printing a zcode file with modified printing speed (140%)? I had the same error triggered twice. The unmodified files printed fine.

11
RaftAway / Re: v1.1.3a Released
« on: March 11, 2017, 05:49:46 PM »
Well done!

12
RaftAway / Re: v1.1.3a Released
« on: March 11, 2017, 12:51:57 PM »
From left to right. 100%, 125%, 150%, 225%, 337.5%
http://imgur.com/5pFH4wZ

I think I've lost something? How did you manage to overcome the speed restriction in RaftAway (>+25%)?

13
RaftAway / Re: v1.1.3a Released
« on: March 08, 2017, 06:06:49 AM »
In general, software development has not met my expectations until now (I'm not referring to RaftAway). Hardware is here but there are options such as variable layer thickness as well as variable printing speed that could significantly reduce printing time, without reducing printing quality. Have you seen these options somewhere? Nope.
Regarding RaftAway, it is a tool that will be used by advanced users. With that in mind, changing the GUI or putting extra inputs will not cause a disturbance. I can understand though that this is a job done by one person that I have to congratulate for his effort. But since is has been released, it is quite understandable that we (the users) would like to test more options. We are here to help in any way we can.

14
RaftAway / Re: v1.1.3a Released
« on: March 07, 2017, 09:10:48 AM »
Time measurements for two identical parts:

Normal speed estimated (Z-suite): 186min
Normal speed real: 218min

+25 speed estimated: 149min
+25 speed real: 198min

Gain: 20 min ~10% overall

There is no visible quality change of the perimeters. Thus, they can be printed using a higher speed than +25%. On the other hand, some minor issues during infill creation.
I think that in order to become a countable option, a speed jump up to 150% should be an option.

15
RaftAway / Re: v1.1.3a Released
« on: March 07, 2017, 05:38:05 AM »
I measured 17.9285g (reference), 17.9233g (+25), 17.8598g (+25).

It seems that it is part dependent. The one that I have printed, has very limited infill. What about yours?

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