== Setting up the new bitebars ==
For the DDPI-mk3, bitebars will have to be much more rigid and consistent than we have previously been used to.

To ensure a rigid fit, please use conical head screws and '''Tighten them as much as possible'''.

{{attachment:bitebar_mounting.PNG}}

Please note that most of our conical head screws are silver, not black.

The screws used should be 3/8 inch 8-32 screws with a conical head. The screws and appropriate hex key to tighten them are in the subject supplies cabinet

'''NOTE: the new bitebars should be washed thoroughly before use. '''

=== Differences from old bitebars ===
 * The new mounts don't include the slight angle that is typical of the mounts made for the DDPI

The new bitebars are completely compatible with the old mounts if this is an issue.

=== Manufacturing ===
These new bitebars are a spline-defined replica of the old smaller bitebars, they are near perfect copies.

They were manufactured by AJL manufacturing, a local company. They have the designs on file and are more than capable of making more. I've also attached the CAD files and production drawings below

[[attachment:Bitebar Mount quote # 13084 6-12-2019.pdf]]

[[attachment:Bitebar quote #13076 6-12-2019.pdf]]

==== CAD Files ====
[[attachment:Bitebar Mount Drawing.pdf]]

[[attachment:Bitebar Mount.step]]

[[attachment:Bitebar.step]]

=== Plastic Bite Bar for EEG ===
A plastic variant of this bite bar design was developed and fabricated for use with the EEG system. It is compatible with the bite bar mounting slot used for the DDPI systems. Dan Guarino from the CVS shop fabricated 5 of these bite bars from a 6"x6"x1/2" Delrin block (P/N 8573K123 from McMaster-Carr) using the CNC router. The CAD file for this plastic bite bar design is attached below.

[[attachment:Bitebar_mod.step]]

[[attachment:Bitebar.stl]]

{{attachment:biteBarPossibleLayoutForCNC.png}}