To build something this large, and have it be stable/print well, tens of thousands of dollars.
Most industrial CNC machines aren't even that big. Also keep in mind 3D PRINTERS ARE SLOW.
This idea is not feasible.
I think you misunderstood me. I want to build a 3D printer that can printer large objects, not build a 3D printer that is a large object. Come on. Be sensible. I am not interested in purchasing a printer already built and having it trucked in, because clearly from the prices everyone has given, that must be what you think I am trying to do.
If I purchase larger linear rods and screws, but keep the actual printer head small, will I be able to print larger objects and not have to pay as much as you think I should pay? I realize the heating bed would be larger but I am willing to buy more then one to compensate.
Also, I watched several videos of people who are 3D printing and found many of their injection heads were quite wide, which I am guessing was the speed up production. I would rather have a needle thin injecton head though, for strengthing purposes. I believe if I printed objects in a lattice formation, it should theoretically strengthen the object similar to certain metal alloys.
I think you misunderstood me. I want to build a 3D printer that can printer large objects, not build a 3D printer that is a large object. Come on. Be sensible. I am not interested in purchasing a printer already built and having it trucked in, because clearly from the prices everyone has given, that must be what you think I am trying to do.
If I purchase larger linear rods and screws, but keep the actual printer head small, will I be able to print larger objects and not have to pay as much as you think I should pay? I realize the heating bed would be larger but I am willing to buy more then one to compensate.
Also, I watched several videos of people who are 3D printing and found many of their injection heads were quite wide, which I am guessing was the speed up production. I would rather have a needle thin injecton head though, for strengthing purposes. I believe if I printed objects in a lattice formation, it should theoretically strengthen the object similar to certain metal alloys.
The chair video shows you the obvious way to do it but a robot arm with that kind of reach and precision costs serious money ($100k+).
Big routing machines with very limited Z travel are much cheaper but if you need a couple of metres in Z as well it just isn't easy or cheap.
These big precision machines are sold to hard nosed businesses - if they could get them cheaper they would.
To make one cheap you need to come up with some new and radical ideas that no one has come up with so far.
MK
I don't mean to be a d!ck but what the f@#$!?!? What is everyone trolling me?
I can understand the possibility that this forum is filled with industrial engineers who are only familiar with industrial size equipment but I made it very clear that I wanted to build a 3D printer myself. This should automatically rule out the possibility of purchasing a robotic arm.
This is what I am talking about: http://www.youtube.com/watch?v=xJndXebTG9I
The only difference should be that the heating panel at the bottom should be stationary.
If you do not know, then do not reply. I am trying to help people with this technology by printing growbeds for aquaponics, and I do not need trolls waisting my time. Please.
I just want to know if using larger linear screws or supports [I do not know the technical name] would increase the size of the objects I would be able to print. Is there anything wrong with using the same printer head as the one in the video?
I would say its definitely not a linear scale up. Ben's printer worked great for the size, but if you scale up that large, you probably can't use typical leadscrews as they won't be strong enough at the lengths you need, you'll need much faster steppers or it will take ungodly long for your head to traverse, you'd have to decrease your resolution for feasibility, maybe beyond the point that normal filament will work.
It feels like you don't have a good working knowledge of 3D printers or the feasibility of what you are trying to do. Even if someone had a realistic number, what good would it do you? Maybe you should start by looking at all the different technologies out there, look at the tradeoffs in the mechanics, belts vs leadscrews, what steppers you'd need to achieve the headspeeds you wanted, do some estimating on how long it would take to print what you want based on volume calculations of your end object, and go from there. Ask specific questions like "I need a leadscrew that is X" long, what type of diameter does it have to be to support X lbs? Does something like this exist?"
Don't blow up on people for not doing their homework if you clearly haven't either.
There are industiral people here, it's true. With that in mind it's a good idea to watch your temper when there's a good chance you are the least knowledgable person in the room. Responce #1, the man who brought us all together here, stated in no uncertian terms that this idea isn't feasable. If you don't trust the rest of us trust him.
If you do as you propose and just make a 3D printer but make it bigger, nevermind the stresses holding up the weight of an XY gantry of that size, nevermind the power requirement for a heated build plate of that size, nevermind the challenge of maintining a supply of incoming filament for the thing, nevermind all of that, you will never finish a room sized print before your children's children have children.
Re-read this thread, there are some good ideas here about an idea that could work. There are those who have done similar projects as well. But simply scaling up the build volume of a small scale 3D printer is not a good idea.