FRC 2018 Bumper Inspection Tool

Tool to help inspect bumpers for FRC 2018 Power Up. Overall size is 5.5"x8". The split version is two sections, 6.8" x 1.5" and 5.5" x 2.8". There's a designed in 0.1mm gap on the spilt, but I may make a tighter version after tweaking some print parameters.

Update: Added labelling of year an latest team update. Also added a set of tighter split files with 0.05mm gap.

NOTE: THIS DOES NOT COVER ALL BUMPER RULES.
I do think the tool can be used for all or nearly all bumper related measurements. Also makes a handy little square for checking some things.

Basic use instructions:

  1. With the long part vertical and on the ground, all bumper parts should be under the skinny bar.
  2. Pressed against a bumper's cloth, the 3/4" mark should be near the back of the wood backing for 3/4" thick wood and 2-1/2" noodles. (HAVE NOT VERIFIED WITH ACTUAL BUMPER + NOODLES.)
  3. The 3/4" marking can be used to verify wood backing thickness.
  4. The 6" mark can be used to check >6" of bumper from a corner.
  5. The 4.5" and 5.5" marks on the back can be used to check the height of the wood backing.
  6. The 1" mark can be used to check the extension of hard parts past the wood backing.
  7. The inside short dimension of the L is 4" which can be used to check the height of numbers on the bumper.
  8. The short top portion is 1/2" tall, which can be used to check font stroke on numbers and the amount of support at bumper ends.
  9. The tool itself is 1/4" thick, which can be used to check the 1/4" allowance for bumpers near corners and the height of minor protrusions like bolt heads out of the frame perimeter.
  10. The long part is 8" long and 1/4" thick. If the long part fits between a bumper and frame from top to bottom of the bumper, you have a gap in support longer than 8" and wider than 1/4".
  11. The split version can soothe grumpy robot inspectors with the satisfying clicking of the layers sliding against each other.