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QuoteOrigamib
What sort of temperatures are you hoping to achieve in your chamber? If it is for ABS, you will likely be happy with 40-60c and I don't think the fabric will be necessary unless you want to make the chamber heater very efficient. If you are aiming for 60c+, then it will be a nice touch as it will also have the added effect of keeping the mechanics cool so they don't bind at the high
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Bill Clark
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Quotethe_digital_dentist
The Cubex machines have a very heavy extruder carriage and a cantilevered bed. The extruders are crappy, but it you replace them with decent extruders, and put in a controller board that doesn't need proprietary filament cartridges, they can print well as long as you keep the print speed down to 30-40 mm/sec. Faster than that and the bed tends to bounce a lot. The XY s
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Bill Clark
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the design of the Cube X duo looks like it would suit my needs. The high temp materials dont like to print fast so theres not much point in building a machine that can. direct drive, dual extrusion means 3 motors will be flying
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Bill Clark
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Thanks for the input. Good point on running a continuous shaft and small belt to the motor. I did want to maintain the 3:1 reduction I implemented on my current printer a couple years ago. That would take care of that and reduce the alignment challenges. Not too concerned with mass as the printer will be used for small nozzle work with high temp plastics and operate at slower speeds.
The next is
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Bill Clark
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I am trying to come up with a simple design for a new printer. In this example the Y axis is driven by a single stepper with a common shaft to drive 2 outward pulleys. The thinking behind this is that it would eliminate any racking. the X axis would be typical belt drive with the motor moving with the carriage. Not sure the best approach for the Z axis/bed. Maybe a rod and lead screw at each corn
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Bill Clark
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weird, i didnt have a problem until I made a post. now...slooooooooow
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Bill Clark
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partially blocked nozzle (check free flow diameter), wrong nozzle diameter in slicer or........
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Bill Clark
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I usually drop by once a day to see if there is anything exciting happening and havent noticed a problem. Dont know where the server is but I'm in the S.E US
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Bill Clark
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Im not saying you should but if I wanted a machine, well tuned, out of the box I would get a genuine Prusa
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Bill Clark
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Hey Repetier, would it be possible ,without too much trouble, to change the font color in the g-code to highlight certain commands? For example all Z commands Z17.7 in red, etc. This could make it easier when editing the code. I have used several types of CAM systems for CNC machines and they have this usefull feature when viewing the code. thanks
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Bill Clark
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Repetier
Dont mean to hijack the thread but I am planing to build a new printer in the near future targeting high accuracy/repeatability. The 5% error was mentioned above. Are there higher quality (higher $$) steppers that have less error? I am printing with a very small nozzle orifice (.08-.1mm) and will probably need the best accuracy possible within reason.
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Bill Clark
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Dont know if you guys have seen this yet but I stumbled across it a while back. Seems like a tidy setup for certain applications
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Bill Clark
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I would like to update to the latest firmware (w/ linear advance) while retaining my original configuration. what is the process? I have changed the existing FW several times but never an update. Using Ramps 1.4, Mega 2560 in a 3yo Robo 3D
thanks
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Bill Clark
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Firmware - Marlin
nozzle too high
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Bill Clark
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I havent read through this entire thread but I will add my 2 cents about rippling. I believe you can minimize it by making the machine mechanically sound and trying to optimize the steppers via different drivers as well as playing with acceleration, etc. I did all that then added a 3:1 reduction on x and y and guess what? got the same effect. The same approx. ripple spacing (in my application).D
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Bill Clark
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Quotefrankvdh
[*] Interesting that they use toothed belts to increase the precision.
Belts are actually a great choice especially for their ridiculously cheap price and a main factor in the success of the RepRap/desktop 3DP in my opinion. Little to no backlash. No z wobble issues if used there. My machine will repeat to less than .025mm (.001") in X/Y after decelerating from 100mm/s . the only
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Bill Clark
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Quoteeried
QuoteBill Clark
I have printed ABS as high as 280c resulting in a significant increase in layer bonding and no noticeable ill effects. Not recommending you bandaid the problem with high temps rather don't be afraid to pour some heat to it. There are a lot of other variables at play here as stated above
Hey Bill, have you tested the pieces empirically or it is just a perception about t
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Bill Clark
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I have printed ABS as high as 280c resulting in a significant increase in layer bonding and no noticeable ill effects. Not recommending you bandaid the problem with high temps rather don't be afraid to pour some heat to it. There are a lot of other variables at play here as stated above
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Bill Clark
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Thanks guys. It is running great on the 8825's w/o any attempts to tinker with pulse timing
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Bill Clark
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I am using Arduino mega/Ramps 1.4/Marlin and am going to give the DRV8825 drivers a shot in place of the 4988's. Info on the 8825 via Pololus site reads- "The timing requirements for minimum pulse durations on the STEP pin are different for the two drivers. With the DRV8825, the high and low STEP pulses must each be at least 1.9 us; they can be as short as 1 us when using the A4988.". I m not ha
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Bill Clark
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Sorry if you have answered this before but what causes these spike anomalies? attached is a snapshot from the Repetier 3D view screen
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Bill Clark
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Repetier
thanks Repetier and thank you for all your hard work on Repetier Host
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Bill Clark
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Repetier
Awesome, thanks for the input gentlemen.
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Bill Clark
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did you paste in text in to your post? It thinks your a bot if you do that
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Bill Clark
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is there a way to select large portions of a program quickly. The only way I have found so far is ctrl and scroll with the curser constantly moving. This takes forever if I am trying to delete or move a lot of lines of code.
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Bill Clark
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Repetier
I would like to extrude filament while the extruder is stationery and have some control over the rate using the SMART LCD CONTROLLER XXL Fr% on my machine. the way I am understanding it now, the extruding rate/speed is a function of the amount of filament for given distance and travel speed so there appears to be no direct control, via g-code commands, over how fast the stepper is spinning. I hav
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Bill Clark
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Ahh, I thought it supported more than 2. Wondering if I could use this for the bed then I could have 4 hotends utilizing the Extrdrboard and ramps?
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Bill Clark
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Thanks Edvardas. A quick search didnt lead me to a supplier for Extrudrboard and Printrbot doesnt show it on their site.
I will stick with 4 hotends to start using 2 steppers, one to drive the 4 filaments a 1 to select the appropriate one.
If I can find the Extrudrboard (or utilize one of the other boards) I am definetly going to need some help with the work around using less steppers via softwa
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Bill Clark
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Thanks for the feedback guys. Seems as though Edvardas and I coincidentally are dealing with a similar issue today .DC42, This will have individual heaters and thermistors. O_lampe, I am hoping the fact that, in a 4 hotend arrangement, the designs 4 nozzle centers fit in an 11mm square limit the issues with height variations. The Extrudrboard also looks like an option if its compatible with my
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Bill Clark
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