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The Reprap is an open source design for a home-made 3D printer, based on 3 linear motors and an extruder head as dispenser of thermoplastic wire.

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Augmenting Prototypes 1: RepRap 3D Printer

Printing more and more

Over the last couple of days we have been experimenting with the machine.

Printing various self designed objects to find the limmits in overhang and print angle.

Some examples lined up:

various things

There are a couple of shotglasses, openfaced cubes (the largest has 20mm wide faces) a diabolo like object and a little model of some kind of tempel with a set of stairs in the middle.

We did encounter some problems with the machine. The printing surface is starting to warp due to the heat from the extruder. We tried to make a new surface from MDF but the objects wouldn’t stick to it so we couldn’t print.

We are now trying to solve the problem with a new PTE plate which is twice the thikness of the original one. This way it can rest needly on the z-platform and because it is thicker is less likely to warp.

The clearly warped original printing bed:

printing bed

With a little bit of patching we were still able to do some prints and continued the explore the limits of the machine. now modeling different angled walls to see were the machine would fale. So far we have printed walls with an angle up to 50 degrees!

Some angled walls:

walls

tomorrow more updates with the new printing bed and attempts to figure out the maximum overhang

 

first print: mug

Here’s a demo of our first real print:

YouTube Preview Image

 

And the print process of our first shot glass

 

YouTube Preview Image

 

 

Fully assembled

As the tittle dictates we have fully assembled the complete RepRap.

The frame, motors and belts all attached:

frame and motors

The working OLED Display:

oled display

we mounted the extruder:

extruder

here robin is soldering the last connector pins to finalise the assembly:

soldering

 

we did encounter some problems with the assembly.

For instance the platform for the movement in the Z-direction didn’t slide down smoothe nough. After adding loads of grease and finetuning the assembly we were able to get it to opperate smooth enough. There is also a fault in the extruder buildmanual. Some parts were not displayed in the manual but they were neccesary to get the extruder head to stick out far enough. thankfully we discovered our problem fast enough and were able to solve it ourselves.

Now we are ready to print!!

extruder.JPG

The manufacturer delivered us an extruder made of aluminium. But now we
need to add some ‘fire cement’ and wires which provide the heating.
This ‘fire cement’ needs to dry 12 hours in room temperature or 10
minutes in an oven after applying. We need approximately 4 layers, so
it’s quite timeconsuming. We’re now at the 2nd layer. 

reprap1.JPG

reprap2.JPG

reprap3.JPG

reprap4.JPG

First things First

As posted below our RepRap machine arrived by mail last thursday.

We unpacked the components and did a quick check if everything was complete.

Looks good so far

The unpacked kit:

 Yesterday we started the assembly and the first peaces are completed:

For now the assembly looks more like an advanced mekano kit!

http://img24.imageshack.us/img24/2867/img1389c.jpg

One of the motor assemblys that will power the movement over the x or y axis:

Thats all for now but we expect to make a lot of progress on thursday.

So stay tuned for more exciting reprap news!!

 

(i dont know how i can show the pictures in my post so if anyone knows please email me on paulcrombach@hotmail.com so i can fix it)

Package arrived

Need I say more?

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