Delta printer Build from scratch

[Didrik_Petterss]

hello! Is there anyone that maybe could help me understand the calculations of the delta type printer?

Ive seen that there are different types of delta printers?

Rostock?

Kossel?

(Pros & Cons?)

(I want to build the type using smooth rod and gt2 belts) 500mm~ build height and 250mm Diameter heatbed “round/square” and carbon fiber 8-10mm rods as arms (with M8 uniballs)

I can’t find any good information, that explains all the angles, length of rods and tower spacings and so on!

If I knew then it would be easy to design it in auto desk inventor. I’m stuck guys and really need your help!

[alexspeller]

http://www.thinkyhead.com/\_delta/ might help with this

[Didrik_Petterss]

Yes but it’s still hard to know which dimensions and where? Base? Radius and so on…

[Didrik_Petterss]

I’ve tried using that but I don’t understand how it’s measured or what it’s messuring?

[3Detcetera]

A few questions…

Is this your first printer? Is this your first scratch build?

Just for knowledge and moving forward…

Know that there is NO THEORETICAL DIFFERENCE in how any of the deltas operate. They all perform the SAME way, based on the SAME calculations. The difference, is simply the hardware delivery. Either it’s using smooth rods, or linear rails, or some variation thereof. The critical (calculating) areas of ANY delta, are based around it’s smooth rod offset, length of its arms, and the offset of the carriages for starters. Honestly, if this is your first scratch build, I wouldn’t recommend reinventing the wheel on your first try. Not saying that you aren’t capable, but the delta platform is rare amongst makers for a reason… it’s very difficult to master. You could read all you want online, but experience will be your BEST teacher. You may want to consider using a prexisting design, then scaling up, once you’ve mastered that.

[Didrik_Petterss]

Yes I understand that. I am capable of making one that’s for sure. I like the challenge to build stuff

i already have one homemade 3D printer (pursa type) and it’s a pretty simple and easy design.

The reason why I want to build my own delta is because I’m curious. And already have a pile of motors, controller boards on hand.

Feels like it’s a big waste of money to buy a Kossel for $200-1000 to just learn and understand the physics of the delta type. And there is even more money into it if I buy a printer that’s suits my needs?

It seems like there are more people intested in building their own delta to?

Thats why I’m starting this thread about it,

So that other people also can get their hands dirty

[3Detcetera]

Definitely understood, as all of my deltas are custom made by myself. But it seemed as if you were interested in starting with something non-standard, vs building/copying a delta from plans that are already out on the web. I was simply saying, start with what’s already made, then grow into something you’ve designed for yourself.

[Didrik_Petterss]

Yeah I’ll probably build one later on,

bought one from aliexpress (Kossel K800 XL version) as a start to learn and understand the Delta style. I’m pretty new to 3D printing and looking forward to get started

ive already built a 3D printer //build in progress

waiting for the last parts to arrive and then it should be ready

The whole delta printer style looked pretty hard at the beginning but as you say, the dimensions / rules is what you design it to be.

There isn’t any “rules” of building it, other than offsets and so on

i may or may not build another printer (depends on how this Ali printer is)

and if i do I’ll update this thread with information so that other people hopefully (newbies) like me can get started

there is for sure information about deltas on the internet but it’s hard to find!

[3Detcetera]

What information are you looking for specifically?

If you will have a working printer soon, once you really learn the process, you’ll be able to print all your own parts. Then it’s just a matter of sourcing your own parts.

[Didrik_Petterss]

I already got a Wanhao i3 and My other printer that im building,

just the general stuff about deltas,

I’ve seen that people talk about 80% rule (arm length) and so on.

And offsets to effector arm angles and such

I haven’t got time to do so much research.

And I don’t have any problem with designing and make a model/design neither to print the parts out from the CAD program.

It’s just that I’m afraid for doing a inefficient printer that’s big and bulky when it doesn’t need to?

My English isn’t the best, as you may have noticed XD

I’m trying to explain what I mean but it’s hard to put the right words for it XD

[tpalagyi]

Hi,

As I have started my 3D printer experience with a Rostock Delta, then built a Kossel mini. I can tell you these printers are great looking fast machines but can be quite challenging to calibrate them well.

Their design looks simple and nice but there is a lot of work behind for all the parts. Like the effector(this is the middle part where the rods connect and where the hotend is ) where its really counts how wide are the rods connections and their offsets from each other and from the center of the effector and related to this there is an ideal height position for the hotends nozzle, because the effector will tilt some degrees when reaching the edge of the build plate and this can be limited with good design.

If you want to know more about the delta printers there is a google group with lot of smart people including of course Johann the father of all our Delta printers.

Here is an article to read:

http://fab.cba.mit.edu/classes/863.15/section.CBA/people/Spielberg/Rostock_Delta_Kinematics_3.pdf

Here is the google group please read as much as you can its a long journey to understand things

https://groups.google.com/forum/#!forum/deltabot

[Honz]

Hi Tamas (@tpalagyi),

I have some questions regarding the delat 3D printer.

How can I contact you?

Thanks

[tpalagyi]

Hi,

You can drop me an email to tpalagyi82 at gmail.com with your questions, or continue here the discussion.

Tamas

[tpalagyi]

Hi,

Not received any mail from you yet.

T.

[Honz]

Hi, check your email now please. Thanks