OK Time for another printer. I usually start with a frame and build a new machine from that. I started with designing a new carriage for my big printer. But it works nicely and I don’t want to fiddle. So progression I thought I would build a new frame and build it into that. While contemplating the carriage design I noticed my collection of Carbon arrows and it occurred to me that the reason for abandoning a delta build last time was finding shafts that are light and strong and they are literally staring me in the face. So question time do I build another Mendel type printer or delta
This is an example of how ADD affects your day. I traced this thought process back to the post by Chris Mitchell wanting to replace his stepper. I’ve been wanting to put some bigger steppers on my printer but there is no point as the little ones work, so I may as well upgrade the machine to justify the work. but then I really should upgrade the machine to dual extruders… Hey look arrows.
Mike, I to am ready for my next printer. I am probably going with T-Slot like you did in that printer, but I’m having trouble finding good documentation on building one like this. I’ve considered just making a T-SLOT version of my Prusa i3 (Wood Box version).
Thats not slotted. It’s a product called Connect-it apparently its as hard to get elsewhere as slotted Aluminum is here. Its actually 25mm square tube
Similar to 80/20 then. T-Slot tubing. I’ve seen what you are talking about as well. Still, it is what I’m looking at because the wood system moves way too much. It works great, but touch it and it moves. 
I’m happy to post the designs for my printers I’ve just not been all that keen to share them on Tingyverse or the like.
@Michael_Scholtz If you haven’t got a delta yet I’d say build one of those. It’s a very interesting design with many advantages over cartesians 
Are the arrows straight, and does it matter if they are?
@paul_wallich The arrows are straight by design (if you get decent ones). All-carbon ones are fairly cheap as they’re not allowed in outdoor competitions. I actually did the same thing as normal carbon rods were very difficult to get a hold of in the UK.
@Petr_Sedlacek
It’s the design vs actuality question I was wondering about. I used some arrow shafts for a cheap quadcopter build years ago, and the bargain bin was not full of straight ones. (But I’m not sure whether that would matter for a delta bot unless you got speeds and forces really large.)
Hey I’m interested in building a new printer from scratch, and possibly using a bunch of parts from my Prusa i3 (And retiring it).
Can I ask what your frame is made of, and if you have any recommendations on what is commonly used?
Ok so a delta looks like the winner. So how big should I make it. Im thinking my limit is it has to fit through a door. That means 1.8m high frame and about 900mm width.
It occurs to me i may have to get drive belts from otis…