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(RepRap en Français)
quel sorte de couroie tu as ?
si c'est ceux avec des fils de fer a linterieur il se peut quels sont fatiguer a force de rouler sur des petites poulies. J'ai meme vu c'est couroie se mettre a deconner en moin de 1-2 semaine sur des nouveau build avec des poulie de 16 et 20.
Si tu as des couroie fiber renforced verifie si elles sont bien serrer
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GroupB
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RepRap Groupe d'Utilisateurs Francophone
I think Makerfarm are the only supply in US/Canada,
But since you looking for a board, maybe a duet is a better option.. I own a radds/raps128 and its working nicely but if I had to buy another it wont be a radds there was a lot of firmware support (RRF) when I brought it but now its dead... firmware support (RRF) are kinda dead except last week where DC42 give us a untested build but I dont thi
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GroupB
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Controllers
QuoteAndreas15
EDIT: For the magnetic balls, I think I'm going to stick with 12mm. It could be too much, but I don't like the look of 10mm on such a large kossel. Remember that beauty is a key on this machine too
A 220 mm printing diameter 700 height is not a big printer, ( why not go 300 and 1M this wont really add more cost but if you need more printing area you will have it+ 300 heatbed
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GroupB
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Delta Machines
Do you have another Board that you can use to rule our firmware/electronic for good ? maybe your mini delta electronic ... Its a weird problem since its not toward a tower. also you switch slicer alrealy just to test right ?
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GroupB
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Delta Machines
je pense pas que vous etes beaucoup a sherbrooke ... meme ici a quebec on doit pas etre une tonne. Pourquoi ce limiter a une ville, ou meme au quebec quand le monde partage deja leurs experience au niveau international en francais mais aussi en anglais.
Tu n'a qua regarder les build thread dans les sections de modele sur ce forum , c'est deja beaucoup d'idee et de realisation et de question rep
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GroupB
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Canada, Sherbrooke (Québec)
Reduce the ball to 10mm its more than enough and its shave some weight... 10mm ball and 3/8 magnet go well together , I have that setup and never once disconnect even when I was doing 3500 acel , 150mm/sec with high jerk.
Also make sure your cup allow the ball to go through the cone into the magnet space a little, so you back ( if tight enough)/shim/glue the magnet to have the proper clearance,
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GroupB
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Delta Machines
@Pascal68
Changer la buse pour une de meilleur qualiter bien polie style mk8, et polie le heatbreak et changer pour une sorte de hybrid je dirais puisque le ptfe ne va pas jusqu'au block mais s'arete dans le heatsink juste avant le plus petit radius du heatbreak ( une sorte de hybrid full metal, et ptfe)
@zelogik les tiges comme tu dis sur une delta c'est du carbone,et ce qui compte vraiment
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GroupB
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RepRap Groupe d'Utilisateurs Francophone
A propos des Deltas , elles ont mauvaise reputation seulement a cause des kits vendu qui sont de mauvaise qualiter, dire que les delta ne sont pas precise... c'est totalement faux... je dirais meme que au niveau du Z elle sont plus precise car elle on rarement le problem du "Ribbing en Z" elles sont egalement les plus rapide en general de 100 a 150mm/sec a 3000-3500 d'acceleration ( 100mm/sec sur
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GroupB
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RepRap Groupe d'Utilisateurs Francophone
Ce frame me semble fragile avec des coins en plastique et du 20X20, jespere que tu pense faire une "enclosure" pour renforcer le tout. Parce que lorsque tu va passer a 32 bit et va vouloir aller chercher de la vitesse/acceleration (120mm/sec/3000 acel +) ca va bouger de tout les cotes surtout avec les joints en metal, sa me semble lourd comme effector. j'espere que c'est de l'aluminum et pas du m
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GroupB
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RepRap Groupe d'Utilisateurs Francophone
Quoteleadinglights
The thing about scaling is that you often need to increase some parts much more than you may think. For example, many small printers have a working volume of about 200mm wide but 200mm deep by 200mm high and they use 8mm smooth rods - the individual errors over this size tend to be a bit less than 0.1mm and they add up to about 0.1mm or thereabouts with care. If however you wan
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GroupB
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General
Im from canada and I build a custom design printer and will build another batch soon and there just no way you will source everything here, and if you do you will pay 2 or even 3 time the price for some parts not easy available here.
Here a small example you cant get chinese mgn rail here but the real hiwin rail and they cost 10 time..
You have to source in other country a least USA or China ,
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GroupB
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General
Nice benchy, I dont want to criticize, I realize you did not ask for advice or anything but if your looking to make it better I saw some small problem on it.
I can see some z ripple problem on some spot ( wall look not equal on the corner of the door and on each side of it ), are you sure your belts are tight enough? If you print something at the same speed like a cube and wall are super fine t
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GroupB
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Delta Machines
Again there plenty of info for arm length on this forum, but I will say it again.
try to be close to 60 degree when the effector is center and 20 degree when reaching the opposite of the tower, get in CAD and figure it out with your specific effector/carrier width and your arm.
BTW delta arm shouldn't not be "about X mm" but a precise length.
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GroupB
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Delta Machines
A delta is not that hard to design/build, I don't get whats your problem that require instruction... if your not able to figure this out by yourself, maybe you shouldn't build it.
There plenty of build log and info on delta on this forum, all delta are similar you should have enough info to do it without specific instruction.
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GroupB
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Delta Machines
Its depend of your printer, I know for a fact that 8825 are horrible in delta specially at 24V, they left circle all over the surface, its because they are not good at low current or slow movement ( happen a lot in a delta one tower move very slowly and only a few while the 2 other move faster).
There way to fix them ( help but not completely eliminate the artefact in delta at least) you have t
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GroupB
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General
In slic3r anything you change width or height will push more plastic by the nozzle.
The only slicer I tried that dont do that is s3d, they first layer thing is more complicated, the width for example also affect the spacing so extra width or height is pushing the same % of plastic, took me a while to calibrate and understand to effect of setting so I end up printing the first layer at the same s
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GroupB
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Delta Machines
Im not using ABS and a heated bed but I print the test part just for the fun since I have no bed adhesion problem at all ( its the other way around it stick too much), I have some problem with Ngen stuff (petg) but its not that bad for petg on non heating bed, This is my next upgrade after I finish my second set of printers a heated bed for this delta.
PLA ColorFab 1.75mm
RRF Firmware Accel 32
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GroupB
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Delta Machines
QuoteDjDemonD
Will try it later. I manually adjust my speed up for first layer infill to save time, but I find with the first set of perimeters, especially if they are curved or they reverse direction sharply, any faster and the nozzle pulls them away.
Its a shame no slicers allow more precise stipulations about speed for first layers, as I would set 20% reduction for perimeters, 50% reduction
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GroupB
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Delta Machines
Having the cup on the arm is easier to get the 45 degree placement for the ball on the effector , the other way around its more complicated, I bet every example of magnet on the effector are flat magnet not in 45 degree, and if you can, you want to have your ball on effector and carrier at 45 degree.
Having the magnet inside the carbon I dont think its a good idea, see they say 6 ID but must of
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GroupB
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Delta Machines
There nothing to calculate really, the best way is get into cad and do the arm, 2 rule to try to respect here, 60 degree when effector are in center and 20 degree when you trying to print away from a tower, horizontal arm dont work well. You dont need to be exactly 60 degree or 20 its a ballpark really.
Printing outside the tower really depend of the arm lentgh (20 degree rule again) and the spa
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GroupB
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Delta Machines
you have to check your step/mm for Z.
Home and mark the position ask 100mm and mark the position and then measure it should give you 100mm when you ask 100mm if its not you have to alter your step/mm (M92)
here the formula in case your not having 100mm
new_steps = old_steps * (100 / distance_actually_moved)
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GroupB
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Printing
8825 are know to have VERY BAD slow and low current movement, try putting those in fast decay see if that help or if you have 4988 switch to them to check and rule out the 8825
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GroupB
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Printing
DO you use Simplify ? if you do and your motor are set correctly in firmware I know there an option in the bed setting to flip bed table axis, like delta user have to select Y flip or its mirrored.
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GroupB
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Printing
Mine at high speed and accel still do sharp corner (no bulge) but they overshoot a little, they go too far before changing direction.
You dont need metal working skill to cut a small piece of .125 plate and bend it, I always cut my .125 with a jigsaw and bend into a vice with some wood on each side.
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GroupB
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Delta Machines
Here an Idea for your carrier ultra light weight, you can use a small .125" aluminum plate just enough height to get your top bolts of your carrier in and give it a bend to 45 degree over the top. then cut it a bit to left only 2 little 45 degree tab enough for your bolts and balls. If I had to replace the rods I made ( check my build thread), this will be what I will do kind of the same style as
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GroupB
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Delta Machines
You can also use another method but its more complicated, but more precise , its the one I used with my previous china driver before my raps128.
a resistor 203 make no sense but a R203 = 0.203 ohm
Check with a multimeter if its 20k your multimeter will read it , if its 0.203 there a good chance your multimeter dont have the range to read it
Can you push the filament with your finger ( bypass
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GroupB
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Delta Machines
That him but he drop the price quite a bit.
If you study enough and plan well a first build delta can be done, I did it, first printer ever was my delta but I spend lot of time into the assembly makeing sure every thing was straight and well adjusted. The result was an easy calibration, then thight the belts more , fix some quick firmware problem and it was good to go. Really the best advice I g
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GroupB
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Delta Machines
QuoteTheHebs
QuoteGroupB
Nice, but I have some reservation about this specific design with plastic corner and gt2 6mm for that size of a printer if you plan to upgrade it later ( that what we do here,upgrade all the time or switch to another build, building a 3d printer is addictive ) you must look into replacing all plastic part with metal and use 9mm belts. They dont sell some prefab for 40X40
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GroupB
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Delta Machines
The formulamfor a4988 are : vref/(8*rs)
Rs is the sense resistor should be 0.05 unless its a china one and they change it in this case you have to check shematic and figure where is the sense resistor, the value on it.
If you follow the formula 1.1v / 0.4 = 2.75A and a busted pololus!
So your sense must be lower maybe 0.1 ( china usual one)
1.1 / 0.8 = 1.375A in this case its in range but a l
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GroupB
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Delta Machines
Nice, but I have some reservation about this specific design with plastic corner and gt2 6mm for that size of a printer if you plan to upgrade it later ( that what we do here,upgrade all the time or switch to another build, building a 3d printer is addictive ) you must look into replacing all plastic part with metal and use 9mm belts. They dont sell some prefab for 40X40 corner but some design c
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GroupB
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Delta Machines