QuoteMyth. I'm getting tired of beating this dead horse. I'll lay out my argument as clearly as I can, and then from here on just link people back to this post when this comes up. String trimmer line is not what you would call high quality plastic - very often the suppliers will throw in scraps, rejects, other plastic they have laying around because the chemical composition of string trimmeby crispy1 - General
You're a brave man. Hope you have lots of ventilation in that room.by crispy1 - General
Quote There's no way that is printing at 450mm/s in the video. 200mm/s max, just based on eyeballing it.by crispy1 - General
QuoteI may have missed it, but any plans for a 1.75mm version? Jo hates 1.75mm filament. :-) The difficulties JGR has outlined above are magnified quite a bit when you decrease the diameter of the hole. It's not feasible to make a 1.75mm hotend of this same design in a production setting.by crispy1 - General
If possible, adjust your supply's output voltage to slightly above 12V. This will drastically decrease your heating time. The dedicated 12V supplies typically have an output voltage adjustment knob that can do +/- 10% which is more than enough to help with heating times.by crispy1 - General
Huh, anyone else just notice that the belt layout in that machine looks like an h-bot?by crispy1 - General
QuoteAnd finally, the reprappro multi color kit has its software build a hollow cylinder (which they call a 'shield') next to the part on the print bed, which it purges into and wipes on the edge of the shield. I was curious if any of the major opensource slicers have something similar, or if they have any plans to add such a feature? KISSlicer already does this. AFAIK the best workaround for Sby crispy1 - General
Quoteif you are printing pla then i believe you can go as big as you want. PLA still has warp forces that must be dealt with. I have had very large PLA prints pull the blue tape off the glass from the warp forces.by crispy1 - General
I second Richrap's sentiment. If you have some issue with Ezra, address it with him directly, not in this thread.by crispy1 - General
Quotealso rather than hijack someone else's thread, maybe this should have been a post of your own. dont you think.? I was starting to think the same thing. But Ezra did include some key insights on why PLA might be jamming or printing less than optimally in the E3D nozzle at low speeds.by crispy1 - General
start at 10:1, but IME it works with a wide range of ratios.by crispy1 - General
Did you actually see this in the printed objects? I ask because repetier's rendering is sometimes not true to life, and shows artifacts that are not actually there in real life.by crispy1 - General
Low cost and high precision linear motion is possible with Cheapskate (http://reprap.org/wiki/Cheapskate) so I am not sure all of this effort to get away from linear motion is worth it.by crispy1 - Developers
Quote@crispy: Have you tried to push your patch for this worse bug to the main repository of Marlin? I didn't write the patch, I just raised the original issue. I don't think it's been pushed to mainline Marlin yet. If you search through the marlin issues you can probably find the issues and the changes associated with them.by crispy1 - General
How is this even remotely related to RepRap?by crispy1 - General
QuoteThe bug I had with CoreXY in Marlin was it didn't correctly enable both steppers for single axis moves. Just doing a tiny jog in each direction was enough to work around it. There was a worse bug that caused layers with high numbers of segments to be slightly offset in one direction or another. This would lead to "tilted" parts and drove me crazy looking for the source of slip that didn'tby crispy1 - General
The final support layer is printed at a fraction of the nominal layer height, in order to reduce the bond strength between support and the object so that the support is easier to remove. Repetier host doesn't display the final support layer properly because it doesn't display different layer heights in the same object. tl;dr: what you see is normal.by crispy1 - Slic3r
Quotea metal enclosure go a long way in that regard too. It would need to be grounded properly to act as a Faraday cage, but yes this would mostly solve the errant EMI issue.by crispy1 - General
QuoteI'm sure they have a plan... Extracting as much money from as many people as possible, while expending the minimum of effort required. In other words "good business practices", lol.by crispy1 - General
Could you people PLEASE stop necroposting threads you found through a google search without bothering to check the last post date :-|by crispy1 - General
@propellerscience Obvious sockpuppet is obvious.by crispy1 - General
Alright I'm in :-) 7. crispy1by crispy1 - For Sale
300x300x300mm print volume, 1.75mm bowden extruder. I have about 100 hours printing time with no major issues related to the bowden setup so far.by crispy1 - General
What are your gears made out of? I would probably give them a light coating of general purpose grease to be safe.by crispy1 - General
Quote If you were going to do this under power do it Afghan lathe style. Put the nozzle block combo in the Chuck of the vise and feed the bit into the spinning work piece. This will self centre automatically and is the basic principle lathes exploit to achieve their inherent accuracy. This may be a bit difficult to pull off for the average person, since the heater block is rectangular and the hoby crispy1 - General
It's highly likely that you will end up ruining it, unless you have a mill with which to drill the hole. Doing it with a drill press is probably not feasible without some very precise fixturing. You may want to email Brian (the guy who makes the j-head) and ask him how difficult it would be to swap out the brass block for one with a larger diameter. He may be willing to sell you just the brassby crispy1 - General
MBI has also been known to be a bit, let's say "optimistic" about their advertised speeds, resolutions, etc. Most people here err the other direction. Also, if you have ever seen a Makerbot print, even with accelerated FW they wiggle like crazy because of how heavy the print head is.by crispy1 - General
QuoteIntegrating the coldend fan and part cooling fan function seems to be a win/win. I don't think this will work as well as you think. The problem is the fans have different requirements. The hotend cooling fan has to run all the time. If it doesn't you *will* get inconsistent extrusion because the thermal environment inside the hotend will change drastically every time the fan cycles on aby crispy1 - General
QuoteSeveral people on this forum have stated that a fan design is a "deal breaker" or have similar strong, negative feelings about it. Heh, that would be me. For me, my print head is already a very crowded place. The last thing I want to do is add another component that takes up a fair amount of space when my experience says it's not necessary. Secondly, I think it's possible to get a suffiby crispy1 - General