1st off, lets clear up a small misconception here - the so called "breathing in of particles" has been severely over-hyped.
yes, some people are more sensitive to the odors of some filaments, and that is something to take into consideration.
I own 5 printers, 3 of which are fully enclosed, 2 open frame - all "unfiltered". I have run as many as 4 of them at one time in my home "hobby room" which is basically a standard sized bedroom turned workspace (approx. 11x12ft, give or take). I sit in close proximity to the printers while they are running and have run them up to 10 hours straight in a day - I do not leave my printers unattended while they are running. I have never had a problem with breathing "particles". Oh, and I run primarily ABS (the same material Lego's are made of) and occasionally PLA, Nylon, and PETG - depending on the project I am working on.
Each material has a given set of properties and the choice of which to use would/should depend on what you are making and what its use will be. For simple models meant for display, then PLA would probably be fine.
I would not buy a DaVinci, or a Dremel, or some of the other proprietary systems out there. Unless you are willing to invest the time, energy and cost of rebuilding them, you are stuck buying only their overpriced materials and parts.
Look for something "open source" - meaning you can buy your materials and replacement parts anywhere you like.
Do not buy the cheapest thing you can find, either.. be smart about what you are buying. Research the heck out of it. Find out the cost of replacement parts - hotends, motors, beds... things WILL break, and will have to be replaced.
That is a fact of life, just like with any other machine..
Can you use material from other sources or are you stuck buying theirs?
Look into customer support - are they easy to reach? easy to deal with? is there a forum or group that can maybe help you with things? (soliforum is a great resource, to be sure.
helped me tremendously when we got our first one)
Is it a well built machine? will it be durable for the long haul, or is it going to break/crack the frame inside of a year?
Obviously a metal frame is going to last longer than acrylic, wood, plastic.
Why do fully enclosed machines cost more than open frame? Simple, more materials in the building of it.
An open frame machine just needs a framework.
A fully enclosed machine needs the framework AND the panels that enclose it, therefor more cost to build it.
As for an actual recommendation... well... for someone in your situation, there is only one "brand" that comes to mind that is open source, relatively easy to use, and has fantastic customer support. The down side to this is that it is not cheap. But - it is extremely well made and will last for a very long time.
this is the entry level machine: https://www.printitindustries.com/colle … 3d-printer
this is the next step up: https://www.printitindustries.com/colle … 3d-printer
The partners in this company are all members here at Soliforum. They know their stuff.
No, they are not one of the "big name" manufacturers, but they know what they are doing, and the machine is solid.
Yes, I was very lucky to be chosen as a beta tester for them and started out with the 8.10 version. I was later sent the parts to upgrade to the Horizon version (i like to tinker, so it was easy for me to install the upgrades).
No - I am NOT paid to endorse these machines. I do so out of the knowledge of having used them myself. I will not endorse junk - even if I was paid to do so.
I have had mine for going on 2 years now. Have hauled it 5 hours to the Milwaukee Maker Faire for 2 years running, and taken it 3hours to Minneapolis for a Maker Faire there. it made the trip in excellent shape. Ran beautifully during the events, and made the trip home again with no problems at all. Still runs perfectly.
So yeah.. do lots of research and figure out exactly what you want to do with it before you buy anything.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1