Building a 3D Printer, RepRap Mendel Prusa2 by craynerd

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raynerd:
:lol: cheers Ray

John - yea, think I could go into selling them.

Phil - I`ve been so impressed, that I`m making one for school. In terms of cost:

£80 for a Prusa 2 parts set inc. hobbed bolt for extruder (unless you can find a machine to print at cost, in which case £20)
£13 for M8 threaded rods, 110 M8 nuts, 100 washers ... and a few bags of other assorted fixings.
£22 for 6 lengths of 8mm Silver steel
£40 for a nozzle (but anyone on here could machine one)
£20 worth of linear LM8UU and skate bearings

The rest is in the electronics
£55 5x stepper motors (nema 17)
£50 RAMPs 1.4
£40 Arduino Mega
£40 for 4 Polulu Stepper Drivers

Then there are a few extras/mods:
heated bed - £15/20
Metal T2.5 timing gears and belt - £25

:( Please.... if you add all that up, just don`t post the answer and certainly don`t tell my wife :whip:

philf:
Chris,

A bargain!

I have added it up - what's it worth not to tell Mrs. Chris?

I'm sure the kids at school will have fun with it.

I'll have to see what parts I've got which might be useable - but I don't think my wife would be too impressed if I spent the time and money on a RepRap before I've built her a garden arbor, had the hall, stairs and landing plastered, fitted a new bathroom and a new kitchen - then there's the new carpets (oh - and she wants a new car!!) etc. etc. :(

:beer:

Phil.

raynerd:
Phil... that is some list!!!

Here are some more pics from yesterday... once again I`m a bit behind.

The plastic PLA filament that I ordered didn`t come on a reel. I didn`t think this would be such an issue but actually it is really important that the extruder can just nice and gently pull filament off the real when it needs it. Consequently, you need some sort of dispencer. If you get a real with your filament, there are quite a few designs with bearings that just allow the reel to unwind but I needed a reel as well.

Here is the prusa buildings itself a filament dispencer and reel!!

Confidence has grown and so I`m now printing fuller plates. This does mean more that can go wrong if it does fail but of course less time and messing around changing prints.

All parts printed and assembly started. Used just over a meter of M8 rod as well:

I also wanted a way to mount the reel. My workshop has joists exposed above head and so I made these two little clamps. Sadly I`ve no pictures of them in use but the part with all the holes gets screwed to the joist. M8 rod going downwards (clearance from the ceiling), nut is included in the design. The only little brackets then allow you to mount an 8mm bar horizontal which the reel then sits on. It works well..

The reel assembled and on the floor. You can see it freely rotates on skate bearings.

raynerd:
Here is a better Yoda:

Chris

edit: Fixed YouTube link. Don

ParCan:
Your reel looks nice Chris..

Yoda has come on a long way as well......

My machine is back together but i have not resolved the issues.
What I do now know is it's not mechanical.

I can only guess that i'm simply over extruding.....

Alex.

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