Skill Builder: Working with ABS and Polycarbonate Film

Skill Builder: Working with ABS and Polycarbonate Film

Following on the heels of our Working with ABS piece, here???s a Make: Project that furthers your working with ABS (assembling via rivets) and includes use of translucent polycarbonate sheeting to create a cool dodecahedron lamp. Author Charles Platt also gives a brief in introduction to the wonders of the Platonic solids.

Dodecahedron Lamp

Working with ABS Plastic

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Using Liquid Paint Stripper as Acrylic Cement

Using Liquid Paint Stripper as Acrylic Cement

Unless your application is critical, cheap liquid paint stripper from the hardware store (not the gel, paste, or color-changing varieties) is a fine substitute for commercial acrylic solvent cement. Comparing one MSDS to another, we see that each product is about 75 wt% dichloromethane (AKA methylene chloride), which is the ???active ingredient??? that softens the plastic and allows it to weld. Purpose-made acrylic solvent is a bit thinner, in my experience, and evaporates a little faster, and contains trace amounts of acrylic monomer that may result in a slightly stronger bond, but for most practical purposes I have not found these qualities to justify paying twice as much for it.

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Laser Craze ??? replacing the computer control of laser-cutting with hands on interaction

Laser Craze ??? replacing the computer control of laser-cutting with hands on interaction


It may be hard to see the details in this clip featuring Stanford Optical Society???s Nick Leindecker, but the two projects that he is presenting are each noteworthy in their own right.

Featured at Maker Faire Bay Area 2011, Laser Craze uses controllers in the familiar rotary format of an etch-a-sketch to transform a laser cutter into a truly hands-on interactive machine.

With the addition of a foot pedal throttle to control laser power, visitors to Maker Faire enjoyed breaking laser cutting from its CNC confines. No longer Computer Numerically Controlled, this time it???s meaty fingers that work those precision optics.

The second project that Nick reveals represents an outlet for his personal LED fetish and fondness for cycling.
Not satisfied with the low resolution of commercially available (and indeed many DIY) persistance-of-vision devices, he set out to create a high-res unit that boasts over two hundred and seventy surface mount LEDs.

Impressive stuff.

via Make

Posted in Art, CNC Routing, Electronics + Robotics, Guy Blashki, Laser Cutting, Maker Movement by Guy Blashki | No Comments

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3d printed food is coming

via Byline

It???s time to start playing with your food

We have seen the excitement building around 3d printed chocolate, but let???s get serious here ??? it???s important to plan for a more balanced diet when it comes our fabricated food future.

So let???s keep those chocolates for dessert, and see what Cornell???s Creative Machines Lab have been cooking up.

The proposition is to build a low-cost 3d printer that can handle more than the regular sway of fluid foods (melted chocolate, cheese, cookie dough etc).

???Foods that can???t be readily extruded from a syringe such as meats and vegetables are ground and mixed with other liquids to create novel food-inks.??? ??? Hod Lipson, head of CCML

Talks are currently underway with Essential Dynamics, a tech startup who plan to produce a commercial version of the Cornell designed 3d food printer that should be priced at around $1000. Founder Jamil Yosefzai believes that the time will come when every kitchen has its own 3d food printer, and he plans to be at the forefront of the customized food revolution.

Via dvice

Posted in 3D Printing, Guy Blashki by Guy Blashki | No Comments

Big Ole 3D Print

Big Ole 3D Print

Jim Smith built a huge RepRap-based 3D printer and used it to print a really big part. It was supposed to be a little bigger, but the extruder jammed after running continuously for 48 hours.

I recently printed what I believe is the largest single part printed by a custom designed, RepRap based, home-built 3D printer. The part measures 376 x 376 x 250mm [14.80 x 14.80 x 9.84in] and took just under 2 days to print with a .25mm layer height.

I used Solidworks to design this cool looking part so that it would max out my build volume on the printer. The part was designed and printed hollow, with a single wall thicknesses (0.5mm) and is made of fully recyclable ABS plastic (for example this is basically the same plastic LEGOs are made from). By printing the part hollow, as opposed to a complete solid, the part is much less likely to warp during printing. In fact, this part did not warp at all. It came out quite nicely and only required minimal clean-up with an exacto knife.

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