Ye I just bought four of them. Also installed the upgrade kit for an old 1.1 workbee.
Honestly the queen bee is pretty great. However, as you pointed out, the tiny lead screw is a huge weak point. Even with the tensioning system, it is still pretty bad. On shorter axis, it really isnt a problem like what @DEEIF has, but the 1m and especially the 1.5m aren’t optimal.
Are all your 4 machines spoken for already? How much would you be able to sell them for?
Do you think you could upgrade the screws to bigger ballscrews on a 1500?
ya upgrade to ball screw should be pretty easy IMO.
I can check and let you know. I know for sure that two are going to schools, we are keeping one, not sure what the deal is with the fourth one.
Well if there is an orphan machine let me know how much. And yeah please figure out a way to use ballscrews that would be dope
The ball screw thing really wouldn’t be hard. You just need to buy the ball screw kit, and make new motor mounts. Can totally drive them with a coupler like the lead screw, or do a flipped motor and use two pulleys and a belt.
But I just want to cut stuff, not figure them out 
Buy an omio then
(or better yet, the new machine I am working on)
why not, if it is good I could be interested… send noods of the machine of course
I need a machine that can cut half sheet of mdf it would be cool if it could cut 3/8 mdf in one pass too 
Ya idk man, for something that big that is affordable, there really aren’t many options. Queen bee or DIY. Our cnc (at least the cheaper one) will not be nearly large enough for that.
I might actually have a machine for you. Let me look into it, I just remembered we have it. I don’t remember the size or anything, but it was a summer robotics project. We are redoing the whole machine shop part and trying to clear space.
Has to be a kit tho I cannot afford shipping a full size machine to Tahiti
oof nevermind
No worries 
Don’t buy cheep else it will end in tears
You could build one have a look on open builds.
There are some really good small cncs there, and it’s not really hard and pretty inexpensive.
As someone who has bought many cheap machines, I have never been stoked on the open builds pricing, specifically for the machine kits (their black box controller is god tier). For machine kits, bulkman3d is the way to go. Once you factor in the hightorque motor upgrade (I highly recommend), the price is night and day.
Having just rebuilt one of my CNC machines I can say that there are 2 rules that you should live by