{{Techniques infobox
|image           = Caster-joint.scad.png
|designers       = [[User:Tim|Timothy Schmidt]]
|date            = 2013
|vitamins        = 
|materials       = 
|transformations = 
|lifecycles      = 
|parts           = [[Frames]], [[Bolts]], [[Nuts]], [[End caps]], [[Casters]]
|techniques      = [[Bolting]], [[Tri joints]], [[Shelf joints]]
|tools           = [[Wrenches]]
|git             = 
|files           = 
|suppliers       = 
|reversible      = true
}}

[[Category:Techniques]]

=Introduction=
Casters are one of the most widely used [[:Category:Parts|parts]] and come in many shapes and sizes, often with a 4-hole mounting plate.

=Challenges=
Mounting the caster securely through all four mounting holes near a tri-joint (which tend to be at the corners of projects, exactly where casters want to be) isn't easily accomplished.

=Approaches=
<gallery>
Caster-joint.scad.png|Stronger caster joints
Caster-joint-suboptimal.scad.png|Weaker caster joints
</gallery>
One corner configuration secures the caster at two points and centers the vertical frame member on the caster.  The other applies significant force, with the possibility of a bending moment on the caster mounting plate.

=References=