Clancey

How does flow work with Print speed, is 100% optimal for every speed? As an example: If I print at Speed 35, Flow 100% for 10 seconds, am I using half the material of Speed 70, Flow 100% for 10 seconds? Or, is 100% Flow an arbitrary flow rate predetermined by the feeder, therefore twice as much material (over distance) extruded at the lower speed? Thanks.

Many thanks, the Horizontal Expansion made a lot of difference, it's still not getting rid of everything but it's far more acceptable. Cheers. )

Hi folks. Before I go ahead and royally bugger up a load of expensive print cores, which if the specialist materials can I use with the U3 cores, .4 and .8. I'm assuming I'd be better off using the .8. And should I use the A or the B core for such things? And for that matter, if I can load the print head with 2x AA heads, why is there a BB, what does the BB do that the AA doesn't, or vice-verca? Many thanks.

Hi folks. I'm a bit confused with the way Cura lays support structures sometimes. I'm currently printing an upright cylinder and cura has decided it should be completely filled with support, but there is nothing above to support. I've played around with all the settings that seem to make a difference and I can increase/decrease the width of support which can save a huge amount of time and material, but I can't dial out this unnecessary material use in some areas. Is there an in depth guide of the Cura Support settings anywhere? Thanks.

But having just seen the picture it looks like a problem I had on day one which was the material not feeding correctly, I would have thought that was a more likely culprit than the glass suddenly not sticking. Your material isn't being layed then lifting, there isn't enough of it so it's getting dragged off the plate. That's what it looks like to me anyway. Is this a new spool?

With my small amount of experience I've found a quick and light spray over with 'Loreal Elnet Satin' (other hairsprays are available) works wonders and has banished all the bed problems I was suffering. And if you let the bed cool completely after printing the objects simply fall off. I'm currently on print run 25 after applying and I haven't had to clean and re-apply yet. (Currently using PLA, I can't speak for other materials yet.) When it does need re-applying a simple quick top up spray does the job, for a full makeover I use Isopropanol to thoroughly clean the glass and re-apply.

And could I ask the same questions for the wood fill filaments? Thank you.

I've read up on all the pros and cons of the food safe materials, how to treat them, what to use them for, and not, etc. What I don't know is if the material it Ulti V3 core compatible. Have any of you any advice or experience with food safe material you could share? Many thanks.

Hi folks. I'm experimenting with some very small parts, the one I'm currently having a slight issue with is a small sphere (around 10mm diameter) on a cylinder which is around 6mm diameter. A ball on a stick if you like. Up to the ball things print ok, then as the sphere is being built, layers are being put down before the material (in this case PLA) has cooled enough to be stable, so I get a growing wobbly blob. I have to say, at the end of the print it's actually not far from spherical, but not quite good enough to be useful. The final part will be nylon but I'm expecting the same problem. Yes I can slow down the printing, which I'm more than happy to do, but what suggestions would you guys and girls have for such a situation? Many thanks.

Has anyone come up with a good solution for hanging 75mm spools on the back of a Multi3? I could design something to do the job, but there's no point in re-inventing the wheel if someone else has already come up with a good solution. Many thanks.

I want to get hold of a few spares, just wondering which nozzles I need. I have the standard AA 0.4 and BB 0.4 for the Ulti 3, I'd like the ability to print in all the different variations for different projects. Can I simply change a .4 nozzle for a .25, tell Cura that's what's going on, and away I go? Same for a .8? If so, I can just keep one AA and BB core spare on the shelf and a bunch of nozzles. Changing them isn't going to bother me as I'd be printing with one size for a while before changing again. Or, should I invest in a few cores and have them loaded with the nozzles? Obviously one is cheaper and more had work, but hey, I could be completely misunderstanding how this would work. Many thanks.

I've read up on Nylon as it was going to be my choice of material before I'd bought my machine. I've done all my testing with PLA for this project so far, and now it's time to do a full run with the Nylon. I kind of took most words of 'difficult to store' with a pinch of salt, but there's no point in wasting the material, so I really ought to take care of it. It is really as sensitive as reports suggest? One night out in the open air is going to make it unusable? This being the case I'll need several rolls which I'll be rotating around the kitchen, front room and workshop! I have taken the precaution of buying a load of little gel sacks and vacuum storage bags, and I will remove the material when I can, but this current run is going to finish at 4am and I'm not setting an alarm to come and rescue the stuff! So, what are your folks experiences, good and bad? Just so I can gauge where I'll be on the spectrum, usually quite low on the luck scale! Thanks.

Ah ok, I had wondered how to clean the nozzles without dismantling the things. I'll give everything a really good dressing down, talking to, and hot wipe and see what I get. Thanks.

Has anyone got a quick check list, or guide to solving fluffy prints? They're ok, I wouldn't call them bad quality by any means, they're just a little fluffy. I'm guessing the material is tearing slightly as the bead is being layed, but I don't have a clue if this is too hot, too cold, too fast, too slow etc. I could spend a day testing everything. Anyone have any tips, or at least an order to approach this from? Thanks.

Hi folks. I'm new to the Ultimaker 3, I have splashed out on some Ultimaker materials, but I can't afford to do that all the time, so I'm trialing some Innofil White Pla. I'm getting 'ok' results, but rough with the standard settings. Could a couple of your share your experiences with Innofil and the settings you've used? Also, the Inno I bought was a large roll, obviously heavier than the small rolls supplied with the printer and it sticks on the material spindle, then stalls in the feeder, and grinds away until there's nothing left to feed. I've slapped a load of lube oil on the spindle for now, but there must be a better solution. Anyone have one? On that point, the spindle supplied for 2 rolls has a build in design flaw. The separator between the two rolls is the perfect distance for material No1 to come off a new spool and wrap around the spindle, which then of course gets stuck. Anyone have any fixes for this? Many thanks.

I received my Ulti3 a couple of days ago, I've been getting superb prints every time until it comes to using the support material, in which case everything turns to absolute crap. Sorry, but that's the truth. I've ready loads about this, change this, change that, is it wet, blah, nothing has helped at all. None of these things are the issue. The PVA goes down perfectly on a brim, could not be better, but when it has to stop and start extruded PVA sticks to the outside of the print head and is dragged resulting in broken supports and huge amounts of spaghetti. I've gone to the lengths of lubricating the outer surface with a tiny smear of oil, this helped a lot until the oil was rubbed away by the extrusion. The 2nd print head which came uninstalled had obviously been used to print the little test piece before it was dispatched, perfectly normal. But the print head wasn't clean at all, there was a lot of molten filament stuck to the outside of the nozzle, black of course. Not huge lumps, very smooth, very molten, is this the same for all? I'm going to have to buy a 2nd BB before I really wanted to because I need to get started, but what settings can I try to reduce the filament sticking to the nozzle? (I should add PLA through AA has been flawless, I haven't tried swapping things around as I don't have spares coming out of my ears and don't want to bugger things up!) Thanks.