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Student-built · Exam-useful · No fluff

ENGINEERING
HELP THAT
HOLDS UP.

Real notes and study systems from a student who earned A’s in these courses—plus an AI tutor grounded in them.

Detail A · Free tool

Make the numbers fit.

Free engineering tool

ISO FIT &
TOLERANCE

Quick reference calculator for common hole-basis fits. Verify critical designs against ISO 286.

Calculated fit · nominal 25.00 mm
CLEARANCE
Minimum clearance
0.000 mm
Maximum clearance
0.034 mm
Detail C · Tutor

Ask the course, not the internet.

Each tutor is grounded in the pack you bought. It teaches the method, cites relevant materials, and tells you when the pack does not cover something.

Student · 10:42 PM

When should I use method of joints instead of sections?

DATUM tutor · grounded

Use joints for forces across much of the truss. For only a few target members, sections is faster. See “Joints vs. Sections Decision Guide.”

Detail D · Access

One pack—or the whole drawing set.

Single course
$15

Lifetime access to materials and its grounded tutor.

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Founding member
$79

All live packs, templates, and every future pack.

All templates
$5

Five editable engineering career resources.

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