February 28, 2014

Go Canada!

My wife and I have been planning a vacation for a while to Costa Rica and the time is finally here.  So instead of buying the typical cheap quality Canada flag luggage or backpack tags, why not make it instead?  We slotted this in with the Mobius Threads sign on the previous blog post.  It is cut out of 16ga steel to be as light as possible.  Here’s a few photos.  Go Canada!

Here the parts are cut off the table and submitted to an acid bath to remove the dross and mill scale.

Canadian Tags

The tags are then bead blasted to ensure a clean, textured and oil free surface to get it ready for powdercoating.

Go Canada!

These are the parts after powder coat.  We used a Super Durable Wet White and Wrinkle Black for the tags.  Just to allow them to be used on light or dark straps.

Canada Flag

Here’s some examples of the white.  There are two different sizes cut, one for 3/4″ straps (on the left) and another for 1″ straps (on the right).

CNC cut backpack

Red and white sure go well together!

CNC cut backpack tags


Go Canada!

February 26, 2014

Testing the new Brake

We’ve been busy working on a few various projects and we’ve finally had time to do some testing the new brake.  Here’s a project we just worked on and recently completed, this blog post describes the process that it took to build it.  The part was designed in Solidworks and then a flat pattern was created and then cut on the CNC table.

Mobius Threads Sign

Mint Design Saskatoon

The engraved marks indicate the bend line locations.  And the two barely noticeable centermarked locations are for two #4-40 countersunk screws to pass through to allow for an Arduino to be mounted inside.  The holes allow for 12v power and USB access for programming.

CNC cutting Saskatoon

The box is not a typical 90 degree box, it is tapered from the front to back so when it sits on the base it will tilt the sign slightly back.  So the first four bends are bent to 100.6°.

Baileigh Brake

Removing some teeth in the brake to allow for the secondary bends.

Testing the new Brake

These next four bends will be formed to 79.4°. which will close up the box.

Mint Design Saskatoon

Here it is finished forming.  You can see the four #4 holes for mounting the Arduino Uno.

Backlit light box

Next the box goes through an acid bath to remove the mill scale and then bead blasting to give it a nice finish to work with during testing.  Also the front panel is cut out of 16ga steel sheet.  Here you can see the Arduino mounted with a prototype shield installed.  This allows for quick wiring and testing of code.  In this photo the LED strip is a 12v white LED, however the final version will most likely have a RGB LED strip.  This is an overkill application for the use of an Arduino, however the cost of the electronics is a very small percentage of the project.

Arduino Uno Mint Design

Here is the preliminary testing to get an idea of how bright things will look and allowing some experimentation with the code.

Arduino Uno LED

Before final assembly the front panel is drilled in all the center marked location (center marking was done by the CNC table prior to any plasma cutting).  The corners of the box are TIG welded and ground down smooth.  Then the box is then powder coated with wrinkle black powder.  Here’s my daughter making sure all the rivets are accounted for prior to final assembly.

Mint Design Assembly 

All the pieces ready for assembly (sans Arduino Uno).

Mobius Threads

Here the Arduino Uno installed, wired and ready to go.  The Type B USB port is left open to allow for reprogramming of the Arduino, to the right of it is the power entry port.  That allows an AC-to-DC adapter (wall-wart) 12v power supply to run the Arduino as well as power the LED’s.

Powdercoat Saskatoon

Powder coat Saskatoon

This is just a prototype light box, once the design is solidified dozens of these will be made and sent out to retail shops carrying Möbius Threads line of scarves, headbands and breast feeding covers.

February 4, 2014

Setting up equipment and updating the site

Well we’ve been busy setting up equipment and updating the site as of lately.  We moved the Baileigh box and pan brake into position and it’s now ready to be put to work.  There may be a CNC backstop being built for it in the future (time permitting of course).  The press brake has been welded up and is ready to go as well.  Here are a few photos.

setting up equipment and updating the site

There is some clamping prior to welding the angle iron piece in place.  This will reduce the chance of warping due to all the heat.  You can also see the black tick marks to ensure consistent start/stop locations while moving from either side and end to end, to attempt to spread the heat out evenly to reduce the chance of warping.  After welding the guide rods needed  a little bit of a tweak but nothing a light tap with a rubber mallet couldn’t handle.

clamping brake pressTIG weld brake press

This will be loaded into the 50 ton hydraulic press and ready for any work that comes it’s way.  Check out our updated services page.  We have now added sheet and plate bending to the list of services available from Mint Design.