Thanks for doing the video. Can you try one thing out, can you video pushing (not tapping) upwards, then holding a little pressure on then releasing it? If it triggers as you push up its okay, if it triggers as you release then the piezo disc is reverse polarity. Flip the plug over on the piezo disc. Sometimes you have to retune vr2 then try again. If it's correct polarity then it's a case of gby DjDemonD - General
They look great, Olampe I think someone has already invented your anti wobble bearingby DjDemonD - Delta Machines
You can certainly use them in pressure release mode just reverse polarity of the piezo. See my bed mount design on thingiverse. it's simple but it works on delta and i3 style, I haven't got it to work well on corexy it's too sensitive to inertia from the bed as it moves up to probe. The teeter-totter type problem doesn't seem to manifest with this tech like it does with fsrs, Piezos are too seby DjDemonD - General
I setup a y splitter 2 into 1 system it was okay never really got it tuned reliably enough to try it out properly. And the waste and extra time required to print 2 colour seemed not worth it for me. If I went back and really wanted to utilise soluble supports I'd consider a dual heads (IDEX) to eliminate prime towers and also use the idea of printing most of a support in the main filament and onlby DjDemonD - General
Only 45 deg C. I've put some new ones in with a strip of aluminium foil under them a little wider than the led strip, but fixing them to some flat aluminium bar would be better still.by DjDemonD - General
This was functioning normally, but being attached to the top of my enclosed machine to some foil bubble wrap type insulation obviously does not offer the small amount of cooling these LED's need not to get a little too warm.by DjDemonD - General
That's what I hoped I had achieved, but I didn't manage it. The rigid couplers made it worse. And I agree the grubscrews are the problem. However with the flex couplers as I have them configured now, its much smoother. With antibacklash nuts and modified carriages to accommodate them, I think its at least going to be in the same ballpark as belt driven deltas. Just also want to say the sensorlesby DjDemonD - Delta Machines
I sell 50w (24v) heaters and to be honest the only real reason they are an improvement is increased heat up times (and they are nicely made and fit well in the heater blocks). The wattage to maintain temperature even with high demand changes is only about 8-9w, its buffered by the heater block's thermal capacity. The flip side is that anything over about 28w or so is probably capable if heating uby DjDemonD - General
I have linear rails on the XL, gates belts 6mm 2gt, Haydn rods 360mm 6mm diameter, smart effector and carriages. Its a 2040 frame with robot digg corners. So it has to be the belts, or the carbon rods.by DjDemonD - Delta Machines
Well, acceleration definitely makes all the difference. I printed two toy rockets. One with acceleration 3000 on X and Y: And one with it set to 1500: (there isn't a layer shift here the part detached and I printed the top 16mm separately and bonded it together) There is much less ghosting on the second. Now I do also have a screw driven delta but its a bit too new and untuned, to use itby DjDemonD - Delta Machines
SupraGuy - once its setup you'll enjoy it immensely. It's very sensitive. Alan - yes we've been working with pyr0ball on thingiverse to bring his system along. I'll wait for Idris to chime in here. It's very similar it incorporates a monostable output which is tied to the red LED.by DjDemonD - General
So heres the latest cube: What I've done is to fit flex couplers at each motor. I did not have any suitable ball bearings but found some small plastic fittings which are inside the couplers, the couplers are then stretched and tightened, to prevent any Z movement during reverses in motor direction (thanks to Olampe for this idea). Removed all three axes and reassembled them. Returned the lowerby DjDemonD - Delta Machines
No on latest boards which are universal kit board v2 and Piezo20 v1.1 the red led is TRG. The TRG works normally closed. So the red Led is on and 5v/3.3v is present on the TRG pin until a trigger then the blue LED comes on for 0.25 seconds the TRG pin drops to closer to 0v. Then the board resets back to red being on. If your system cannot be modified to accept active low/NC signal then you canby DjDemonD - General
Hi so if the red light never turns off then something is amiss. Perhaps the piezo is faulty or has bad wiring? If you set it up on the bench just with 5v and GND connected, leave VR1 at 0.5Mohm that's fine, and one piezo connected, you should be able to get the red Led to come on and off with VR2. The point at which it just comes on is the most sensitive point. If this doesn't work then somethingby DjDemonD - General
I just swapped on some genuine gates 2gt power grip belts can't say it makes any difference still see a little ghosting when printing reasonably fast. Had no name ebay belts before.by DjDemonD - Delta Machines
Tell us more about the belts? Are they stretching?by DjDemonD - Delta Machines
Some motors are just not great. I had two which came attached to a dual mk8 extruder I was going to repurpose but they had a lot of detent torque and felt stiff and notchy, and they made a lot of noise. Set to full steps they could probably pull a train but I didn't need them to and they would have probably sounded like one.by DjDemonD - Delta Machines
Talking of which I am going to put the lower bearings back in, but also quite fancy printing some 608z bearings but making the central hole 8.5mm rather than 8. Then trying both to see whether slightly less contraint helps or not. (I'll print bushes rather than actual bearings).by DjDemonD - Delta Machines
My XL has rods that are 360mm and are Haydns pre-made delrin ones with 6mm rods. I was a bit dubious that they would be stiff enough but I'm not sure I could make that machine more accurate (did I really just say that about a 3D printer?). But I do need to make some new rods for the fishtank printer in abs or petg as it gets quite hot inside, if I can sort the leadscrews out first. So I could tby DjDemonD - Delta Machines
Yeah I've never thought pla was dissolved in acetone. Is it plain pla or some hybrid material?by DjDemonD - Delta Machines
Testing it aside, why does a hobbed drive gear need to be hardened. Is mild steel not hard enough to bite into filament.by DjDemonD - General
This is the real crux of the problem. Making things in Europe/North America and including the costs incurred in design/testing/safety etc.. and then marketing it and selling it means you can make a high-quality product but not cheaply. If you then want to make it cheaply you get it made in China. If Trianglelabs had approached us, and said they'd like to make our product, I am quite sure we wouby DjDemonD - General
Well I've set mine to the current which is approximately 75% of the motors rated max current using the table in the word document above and run them at 1/32 microstepping. Quiet enough, cool enough, powerful enough.by DjDemonD - Stepper Motors, Servo Motors, DC Motors
Good point, I could envisage some sort of sprung device which allows lateral movement.by DjDemonD - Delta Machines
The irony was I wrote this review originally, being fair I think to E3D and Trianglelab. Then Trianglelab made a (bad) copy of my product. You couldn't make it up. Whilst copying an open source design and selling it is not inherently wrong, what is wrong is: -using the originator's logo/name/brand/trust to sell your product. -making a poor quality copy -using the originator's documentation -expeby DjDemonD - General
No the bed sits on a printed ABS support with non-slip matt on top of it, which is bonded to what was the fish tank lid, the upside down fish tank sits quite snuggly into the lid. So I don't think its movement in the bed. I need to take the three axes out and rebuild them. Initially using the preloaded flex couplers and ball bearings, keeping the lower bearings. I am going to order some antiby DjDemonD - Delta Machines
So took the lower bearings off. Didn't look or sound any smoother, the screws were wobbling around a bit on longer Z moves, the motors were still wobbling around a little. Printed this cube (right) without the lower bearings (but with a calibrated extruder). Apologies for grey bit in the middle thats where I was marking the filament to calibrate the extruder. So I think next will be flex coupby DjDemonD - Delta Machines
Not yet but getting the rails/screws running smoother is quite high on the list.by DjDemonD - Delta Machines
Well, first print, and whilst there is a long list of things to tune and tweak, it appears to be viable: See it printing here: Layer registration is better than I expected with the screws and not using antibacklash nuts. List of things to sort out: -wobbly motors, alignment of some motors to leadscrews not perfect. So either use flex-couplers with the ball bearings inside and pre-stretcheby DjDemonD - Delta Machines
Yes I have underbed on the minidelta and it works great. Sorry if there is some confusion but I thought you were asking does it work just bonding the piezos to the bed. The noise cancellers (if needed) possibly. The "sensor" piezos probably not so well.by DjDemonD - General