Hello if got this Mk3 alu heat bed (dual power). Can I use a SMD thermistor on those LED SMD pads instead of having a through hole thermistor glued to the middle of the bed ? Does this work or are the tracers just not layed out for getting the temperature ? This is a picture of my MK3 heat bed with SMD pads for LEDs and a resistorvon ianmcmill - General
Super ! Danke für die Tipps ! Zur Isolierung der Unterseite des Betts hab ich einfach Platzunterleger aus Kork von Ikea zugeschnitten. Die sind 3mm stark.von ianmcmill - Druck- und Heizbetten
Hallo, ich habe mir letztens bei cubic-print ein MK3 Dual Power Heizbett gekauft. Der Händler gibt keine Beschreibung zu dem Bett, nur einen Link zum Reprap Wiki. Im Wiki wird die Version des Betts mit SMD Thermistor geführt. Das Board, das ich bekommen hab, hat etwas andere Pads als das im Wiki. In meiner Unwissenheit hab ich mir einen SMD Thermistor gekauft und einfach mal auf die zwei kleivon ianmcmill - Druck- und Heizbetten
Coole Sache Edwin ! Genau das Problem mit dem falsch bestellten ABS hatte ich auch. "Wow 19.90 € für 1kg Filament ? GEKAUFT ! VERDAMMT ABS!" Das werd ich auf jedenfall ausprobieren. Muss das ein besonderer Klebestift sein ? PowerGlue oder was es da alles an verschiedenen Sorten gibt ? In einem englischen Artikel schrieb mal einer, dass funktionert nur mit XX PowerBlablabla... Was mir allerdingsvon ianmcmill - Druck- und Heizbetten
Borosilikatglas dürfte man doch auch bei jedem örtlichen Ofenbauer bekommen oder ?! Die Glasplatten in den Holzöfen fürs Wohnzimmer sind ja auch alles aus dem Glas.von ianmcmill - Druck- und Heizbetten
QuoteKenny-F-Powers Also zu dem Schlauchthema muss ich mich dann schuldig bekennen, mir wurde vom Vorbesitzer des Druckers gesagt das es der von 2Printbeta ist.(Oder ich habe es mir ausgedacht....) Deswegen hab ich den Peek Ersatz für mein defektes Peek Teil(Eigenverschulden) auch dem Schlauch angepasst. Gestern Abend eine Schwalbenschwanzführung ohne Kühlung gemacht und siehe da, es klappt (von ianmcmill - Extruder, Hotends & verschiedene Materialien
Okay okay. Still I went from 1st PSU to 2nd wirings and now ended up with 3rd the MOSFETS. Switching the computer PSU (22A on 12v line) to the PSU I used with my Filament extruder (16A on 12v line) did increase the overall temperature (despite it has 6A less on the 12v line) I went from 80°C to 100°C combined with using new wirings from an old flat iron (which should really do the job!). All ofvon ianmcmill - Controllers
The three MOSFETS on my Ramps 1.4 are P55NF06L ; 7SABF ; V6 ; PHL 243. None of the ones you named there. Might this be the bottleneck ? I insulated the alu plate with a 3mm cork sheet. I just received my Teensylu v0.8. Gonna give this a shot as soon as I get another hotend.von ianmcmill - Controllers
Bei mir ist das kein Schlauch sondern ein Röhrchen mit Außengewinde. Das is fest. Nach dem Reinigen und Zusammenschrauben hab ich mal durch geschaut und dann tatsächlich eine Wulst gesehn wo das Teflon auf das Kupferröhrchen stößt. Habs dann mit nem 2er Bohrer sauber gebohrt. Erster Druck hat einwandfrei funktioniert. Nach 2,5h war der Druck fertig und bis auf die letzten 3-5 Layer alles super. Dvon ianmcmill - Extruder, Hotends & verschiedene Materialien
Also den mal durchgebohrt hab ich ja auch schon. Nachdem die Verstopfungen aufgetreten sind. Hört sichg rad pervers an... Jetzt hab ich das PEEK Röhrchen in der Hand und wunder mich wie ich den PTFE Inliner raus bekommen soll. Das Inlay/iner sitzt oben ganz schön plan auf mit dem PEEK Röhrchen. Also verschoben haben, sollte sich da nichts zeit meinem Rumgewerkel. Da das PTFE doch eher weich ist,von ianmcmill - Extruder, Hotends & verschiedene Materialien
QuoteKenny-F-Powers 1. schieb den Teflonschlauch in das Kunststoff Stück 2.dreh jetzt das hotend hinein 3.wenn du merkst dass das hotend den Teflonschlauch wieder herausdrücken kann ist das richtig. 4.Hotend bis zum Anschlag hineindrehen 5.Hotend wieder eine halbe Umdrehung herausdrehen, den Teflonschlauch gegendrücken und bündig am Plastikteil abschneiden (Gutes Cuttermesser) Wenn du jetzt dasvon ianmcmill - Extruder, Hotends & verschiedene Materialien
Hallo ! Habe wohl das selbe Problem. Auf einmal wurde nichts mehr extrudiert und das Filament am Hobbed Bolt fast druch gefräst. Habe das Hotend komplett auseinander gebaut und durchgeputzt. Danach war alles wieder frei und ich habs fest zusammen geschraubt. Als ich dann aber wieder auf 200°C geheizt habe und das Filament durchführen wollte hats sofort wieder blockiert. Mir kommts so vor als würdvon ianmcmill - Extruder, Hotends & verschiedene Materialien
I ordered the heatbed here 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 the MK3 Alu which says Quote Resistance between 1.4 and 1.6 ohm for the 12V Resistance between 5.0 and 5.4 ohm for the 24V I switched back to PLA. Heating to 60°C takes just 4 minutes. I've found energy saving self-von ianmcmill - Controllers
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 inbetween 18 and 19 AWG and would be right at the very edge which what you should use. They likely are getting warm if you're running them non stop. What is the resistance of your bed? The specs claimvon ianmcmill - Controllers
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. After 10 minutes I get 80°C. From there on the temp only increases in 0.1°C steps.von ianmcmill - Controllers
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 input to the RAMPS 11A connector): a. 11A PSU input to RAMPS? b. D8 + pin (nearest the 11A connector)? 1 a. 12.37v 1 b. 12.37v QuoteCefiar 2. What voltages do you get on the following placesvon ianmcmill - Controllers
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 ?von ianmcmill - Controllers
Quotewangfei ... Result is that my Mk3 heat bed now can reach about 105 deg C in about 18-20 min. It does not seem to be going higher.... Is this time common/normal ??von ianmcmill - Printing
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 12.34V on the ramps input clamps and 12.01 on the heatbed clamps.von ianmcmill - Controllers
Hello I purchased a MK3 dual power aluminium heat bed from . It ships without NTC so I took a "spare" thermistor of my other 3d printer (QU-BD TwoUp) which is a default EPOCS glass bead. I attached it in the middle hole of the bed and secured it with Kapton tape. I use a Ramps 1.4 board with Repetier firmware 0.9x. I did solder 2 wires to the "-" pad and connected both wires with the pin D8-negvon ianmcmill - Controllers
Another method would be to print out a jig with attachments for the ball joints with exact distances for the carbon rods. If I think about it, the carbon rods can even be shorter (by 1-2 mm) but because of the fixed traxxas ball joint attachments you can simply glue in the rods without further hassle.von ianmcmill - Delta Machines
Very comprehensive explanation ! Thank you ! The method with the screw is a really good. I have seen this in the Rostock Mini Pro build. I used 2 component glue. Breaking stress at approx. 1900N/cm² as the manual says. Cutting the rods at the ball joints and attaching a set screw would be best practise but on the other hand I could get new ball joints and carbon rods with the same inner diameter.von ianmcmill - Delta Machines
My calipers won't measure this far. 153mm at most. A simple tape measuer won't be more accurate than this yardstick/zollstock. I epoxied the u-joints. So it's easier to order new Traxxas u-joints and carbon rods. I'll read the calibration articles for futher clarification. Thank you thib88 for pointing me in the right direction.von ianmcmill - Delta Machines
Hi while building my Rostock Mini (from ) I needed to glue the carbon rods to the Traxxas U-Joints. After glueing them in it raised a question. How critical is the accuarcy of the different arm lengths ? How far is it possible to adjust the length of each arm pair by the endstop-screw ? Is it possible to calibrate or set an offset anywhere, anyhow to compensate varying carbon arm length ? Tvon ianmcmill - Delta Machines
Hi again ! I have finished my build. Runs perfect and the filament comes out smooth and shiny. Thanks Xabbax for the tips !von ianmcmill - Plastic Extruder Working Group
Quoteianmcmill Thanks. Getting the laser to work was alot of fun. Oh I forgot to mention that I am not using pure ABS but a PC/ABS compound. It combines the high temperature rating of PC with the lower one from ABS. The datasheet says "Processing (melt) temperature = 240-270°C" (Link to the datasheet) Also when extruding the temperature decreases continuously by circa 0.1-0.2 °C per second anvon ianmcmill - Plastic Extruder Working Group
Thanks. Getting the laser to work was alot of fun. Oh I forgot to mention that I am not using pure ABS but a PC/ABS compound. It combines the high temperature rating of PC with the lower one from ABS. The datasheet says "Processing (melt) temperature = 240-270°C" (Link to the datasheet) Also when extruding the temperature decreases continuously by circa 0.1-0.2 °C per second and the heater cavon ianmcmill - Plastic Extruder Working Group
I just found your Masterbatch guide. Wonderful !! That filament looks awesome! This will serve me as a model ! I made some pictures of the filament and recorded an extrusion. This is my extruder in action. The cracking sound of the pellets is nasty... This is the result of around 30 minutes extruding. Extrusion temp. around 270-280°C Extrusion temp. around 270-280°C Here you can see thvon ianmcmill - Plastic Extruder Working Group
Thanks for the clarification. I am now satisfied with my coupling and trying to get filament extruded. I have got some PC/ABS blend pellets with a processing temperature of 260-280 °C. Once the auger transports the pellets to the heater, the temperature drops from 280°C to 250°C and heats up again slowly. The problem is that the fan is not enough to cool the filament quickly enough. Therefore thvon ianmcmill - Plastic Extruder Working Group