> Today I bought another 150x150x6 aluminium sheet and it is bended :-( Keep in mind, that there are many kind of aluminium sheets: AlMg1 AlMg3 AlMgSi1 AlSiMgMn, etc, etc. Some of them are really soft, and prone to bend. Adding Si makes it more rigid, also adding Mg makes a bit harder, but not as much as Si. So if you got AlMg1, Im not surprised it is bended... Try to mill it flat with thby khiraly - General
> And what about electronics control? can we see the temperature value? As ABS requires the highest temperature, Im not attaching any control circuit to it, Im simply using resistors which are the right value for ABS printing. If I would include electronics, it would be way too expensive(SSR costs about 20EUR, an arduino board 30EUR more, so it would boost the price another 50EUR for almostby khiraly - General
Just to inform you guys, I made my own prototype like a week ago, Im currently milling it flat with a dremel holder, and Im working on a second prototype, which I intend to sell too. Expect some articles at soon. As for the selling I plan to sell it at 100EUR if there are more then 18 buyers, or 150EUR if less (+shipping of course), I can ship inside EU. The next prototype is almost the sameby khiraly - General
Yeah kapton tape burns rather violantly. I wanted to prove to my friend how heat resistance is, so I took my lighter, and tried to put in fire, and it had no problem, burned really fast. Dunno if it is toxic or not ... If I read correctly at the wikipedia article polyimide is made from CHNO, so should not be toxic, but Im not a chemist.by khiraly - Mechanics
Im thinking along the line of buying owon or rigol oscilloscope. A 50Mhz rigol oscilloscope (true one, not usb scope) costs 408$: Or an 25Mhz Owon one is 197GBP, 40Mhz 270GBP, etc: Fairly easy to buy an Owon here, there are local stores they are selling too, and no warranty worries. Buying directly from china makes warranty handling extremely difficult.by khiraly - Controllers
> Stainless steel is a very poor conductor of heat. Yepp, but you use 6mm thick aluminium sheet, while 2mm steal sheet is more then enough, and not too heavy either. A 35x35cm piece of sheet is 2.3kg, while bitsfrombytes plastic bed is 1.3kg. Steal is not really needed (or stainless steal), a regular cheap iron sheet is enough I think. Using the magnets I have a slightly different idea. wby khiraly - General
nophead wrote: > The idea of the vacuum table is to use a sheet of Kapton film rather > that sticky tape. Im thinking more about stainless steal bed, and the kapton tape attached with magnets.by khiraly - General
I think threaded rod design would seriously affect the build speed. McWire design seems to get 4mm/s head spead. While Mendel is supposed to print at 16 or 32mm/s. Best regards, Khiralyby khiraly - For Sale
Thank you guys your reply. spacexula: With makerbot I have the following problems: 1. They are always out of stock for kits, pcbs 2. Importing from the USA has the following disadvantage: a) higher shipping costs (I get many quotes from private shipping companies, I would get between 2-300USD for shipping 20kg package to the US. Maybe bigger companies get dirty cheap shipping prices) b) dutyby khiraly - For Sale
Hi! Im thinking of having the stepper driver v2.3 pcb manufactured. For the price would be about 30EUR for the pcb(+shipping): The price is about 100EUR/dm^2. If we are numeruous, maybe we could find a cheaper company to get the pcb manufactured. I would ship only inside EU, so no international shipping. Whould anybody interested in it? Im only brainstorming in the current state. So if anyby khiraly - For Sale
Joshua: The middle 3 holes of the frame-vertex is not used. So I think you could spare a bit of time to not make it. Look for example to this picture: (ok, the motor holder, leadscrew-base are upside down, but the frame-vertex are right) Best regards.by khiraly - For Sale
BalanceSeeker: You can download the modified pulley from this blogpost: Hope it helps.by khiraly - Mechanics
Hmm, the file in the svn are upside-down. Here is the rotated .stl file:by khiraly - Mechanics
BalanceSeeker: If you wait until tomorrow, I will post in my Mendel build series about exactly this problem. I modified the drive pulleys, so they accept my motor shaft. I will post the .stl file too, so you can simply print it. See my Mendel build series at:by khiraly - Mechanics
Turned out, it fixed the issue. Only a tiny part of one string detached from the object base. Its dirty, but works.by khiraly - Skeinforge
Ok, I modified 0.97674418604651159 to 0.97. Gives from 1.67 to 1.68 depending on the .stl. (still no idea why it depends on the .stl in the first place)by khiraly - Skeinforge
Ok, I changed the line 438 of raft.py from this: self.operatingJump = self.extrusionTop - self.cornerLow.z + 0.5 * self.layerThickness + self.layerThickness * self.raftRepository.operatingNozzleLiftOverLayerThickness.value to this: self.operatingJump = self.extrusionTop - self.cornerLow.z + 0.5 * self.layerThickness + self.layerThickness * self.raftRepository.operatingNozzleLiftOverLayerThicknby khiraly - Skeinforge
Triffid: Where is this caliper tool for Blender?by khiraly - General Mendel Topics
Enrique: Do you remember where it was the bug in the old version? Maybe I could just fix it, and use the (tested) old version. Best regards, Laszloby khiraly - Skeinforge
Thanks for the help Enrique. Looks like this new version forgot all my settings. The temperature is wrongly set in the .gcode file, it activates plugins which I have really bad experience with (speed, comb, cool, jitter). So it will take some days or weeks to set it again correctly. And also it generates the .stl file a bit odd:by khiraly - Skeinforge
> Does this require more sizes of bolt than needed before? Yes. M3x35 and M4x45 or M4x50 are not used anywhere. > Perhaps using a higher percentage of infill would have accomplished > the same thing without changing fasteners. I think fill precentage changing has more trouble then benefit. I didnt changed the infill at the whole build. Im thinking more like sunken the head of the bolby khiraly - Mechanics
Zsolt: Azota en mar megepitettem az McWire-t, van mukodo gepem, es Mendelt epitek legujabban. Itt olvashatsz par reszletet: Van meg par dolog amit el kell simitani, de elvileg majd arulni is fogom. Szerintem McWire-t nem erdemes epiteni. Vagy legalabbis nem igy ahogy a honlapon van fenn. Rengeteg modositas kellene, de utana tenyleg hasznalhato lenne. A jovoben tervezem, hogy az Mcwire-emet felby khiraly - Hungary RepRap User Group
Hi! I have trouble with skeinforge. I have beautiful prints except the first layer of the object. Here is the .stl file, what I have printed: Here is the generated gcode file: Here are some photos about the problem (the first layer of the object delaminate from it): The extruder motor is running at 40rpm, and the layer height is 0.43mm. See this blogpost for detail: Layer heights of tby khiraly - Skeinforge
Thank you Chris. Monday I will buy than 4 M3x35 screws(replacing M3x20) and one M4x45 or M4x50 (replacing M4x40).by khiraly - Mechanics
Ok, here is the problem, backed up with photos. The M4 screw (M4x40) is too short on one side: The four M3 screws(M3x20), which attach the stepper motor are too short, because the RP part are too thick:by khiraly - Mechanics
Hi! Have you anybody successfully built the extruder? I have some basic problems with the design (I downloaded the latest from svn): Attaching the RP parts to the carriage, one of the M4-40 screw is not long enough. Also the part is too thick to screw the M3-20 screws into it, so the motor cant be attached to it. So Im wondering if it was tested and built at least once. I will post some photoby khiraly - Mechanics
Im interested Leo, I will shoot you an email this evening.by khiraly - For Sale
I swapped the parts. Here is a photo about it:by khiraly - Mechanics
Grogyan: you mean the z-leadscrew-base part should be upside-down? This one: Or should the whole stuff (gears, bearings and also the belt) go at the top? (ie. above the z-leadsrew-base part) Thanks for the tip, I will experiment with it. ps: I also finished the texts of the blogpost too;-)by khiraly - Mechanics
> Hmm, looks like a bug. In the video presentation by Ed you can see that > it sits on the frame vertices I have watched several times, for observing, and for me it looks like there is shadow under the frame vertex, so it does not touch the surface. I will post definietly some photos this evening. Just want to mount everything. (just finished cutting to length the linears shafts). Bestby khiraly - Mechanics