UP! 3D Printer Extruder Head
Posted by dBauen on October 23, 2011
The simplicity of the UP! 3D printer extruder head is revolutionary, especially for application for the DIY 3D printers. All of the DIY extruder head designs up to this point are plagued with problems. Most are due to the larger 3mm fillament size, but now 1.75mm fillament is available and requires substantially less force to extrude. A small stepper can be used to direct drive the fillament.
The major innovation is using a cooling fan and heat sink to cool the entrance to the extruder. This creates a very small temperature differential, and gives greater control of the point at which the plastic will melt. This prevents backflow, jamming, and a slew of other problems. It also reduces the overall height of the extruder. I noticed that makerbots have copied this design for their newest extruders.
Click here for the complete take apart.
iPhone 4 Take Apart Video
Posted by dBauen on October 22, 2011
Eppendorf Easypet Pipetter Teardown
Posted by dBauen on October 21, 2011
The Eppendorf Easypet Pipetter was brought to me to fix because the fill trigger was broken. It only worked intermittently. This set of images details the dissassembly of it, and repair. Once the case is open, there was a lot of corrosion (green gunk) on the contacts of the switch. This would explain intermittent operation. Clean the corrosion until you can see the gold color again, and it should work fine. This seams to be a common problem with these pipetters...
The corrosion can be seen in the picture below. Click here for more pictures...
Black & Decker Autowrench Teardown
Posted by dBauen on October 21, 2011
Prazi MD65 (SD300) Lathe TakeApart
Posted by dBauen on October 21, 2011
Sherline Mill (Milling Machine) TakeApart
Posted by dBauen on October 21, 2011
Took apart a Sherline Mini Mill to clean and refurbish it. See the TakeApart here.
Take Apart Bike Ad
Posted by admin on February 7, 2011
Cool ad showing a completely taken apart bicycle.
http://adsoftheworld.com/media/print/minicuotas_ribeiro_pieces_bike?size=_original
