BITS U103 · Course guide

Engineering Design & Prototyping — starting with Fusion

A different kind of course from the maths and circuits ones: nothing here is hard to understand. It's hard to do, until the muscle memory arrives. These pages exist to make sure you're not also fighting the concepts while your hands catch up.

Start here — the honest status check

In MATH U101 there is a real, bounded gap between you and the JEE-drilled half of the hall. In this course there is no such gap. Parametric CAD is not on any school board syllabus, not on JEE, and not on BITSAT. Almost nobody walks in having used Fusion, and the ones who have are hobbyist 3D-printer kids, not people with a two-year head start in a coaching centre.

This is the course where everyone starts on the same line. The people who look fluent in week 4 will be the ones who put in twenty focused minutes a day — which is a fully affordable price, and one you can start paying today.

No handout yet — read this before trusting the scope

The U103 handout hasn't been issued, so the scope below is inferred, not confirmed. What's on these pages is the part of the course that can't not be there: how Fusion works, how sketches and features work, and how to read an engineering drawing. Those are true of the software and the discipline regardless of what BITS decides to emphasise.

What is genuinely unknown until the handout lands: the evaluation split (lab exam? portfolio? group project?), whether 3D printing / prototyping is graded separately, whether the course also covers design thinking, sustainability or reverse engineering, and how much formal engineering drawing is assessed. When the handout arrives, this guide gets a reconciled scope section and the practice tables get re-pointed.

Mid-sem · Sat 3 Oct · graphics: missing view, missing lines, sections

Last year's mid-test (11 Oct 2025: 90 min, 60 marks, 20%, twelve 5-mark questions) was half manufacturing and half graphics. This year's graphics scope is three question types: missing view, missing lines and a sectional view (last year's Q7, Q8 and Q10). These pages cover exactly those.

Start here · crash course · ~60 min Engineering graphics: the three mid-sem question types From basics: first-angle layout and labels, then missing views (mitre line), missing lines, and sectional views. Each with a figure, a "how to start", and the traps. Ends with tonight's plan and an exam-room checklist. Past paper · Oct 2025 · Q7, Q8, Q10 Last year's graphics questions, decoded The three in-scope graphics questions as set, each drawn step by step (Back / Next) in the order you'd draw it in pencil, with the opening move and the traps. Note on Q7–Q8: the paper's own view layout differs from the lecture's first-angle examples — follow the layout the paper shows. Practice · missing view & missing lines · 9 problems Practice at Q7–Q8 level Five missing-view and four missing-lines problems, warm-up to exam level, some in the first-angle layout and some in last year's Q7 layout. Draw on paper first, then step through the answer. Every view is generated from one 3D model, so the views always agree. Practice · sectional views · 5 problems Practice at Q10 level From a block with one hole to a flanged boss like last year's Q10 and a stepped-bore hub. Each answer builds in pencil order: projectors, outline, edges behind the cut, hatching, centre lines. 🎧 Narrated walkthrough · 4 min · sound on First angle or third angle? How to tell Watch the planes fold both ways and see why the top view lands below (first angle) or above (third angle). Then both clues that prove last year's Q7 and Q8 were third angle, and the one-feature rule for the exam. 🎧 Narrated walkthrough · 4 min · sound on Last year's Q7: the missing view, feature by feature Reads the isometric, places the views, then builds the side view one feature at a time with the 45° mitre line — hidden lines included. Pauses three times for you to commit to the next move. 🎧 Narrated walkthrough · 3 min · sound on Last year's Q8: the missing lines One feature at a time — base, channel, upright, holes — highlighted in the isometric and all three views, then the eight missing lines added. 🎧 Narrated walkthrough · 3 min · sound on Last year's Q10: the sectional view The object cut open along A–A: what gets hatched, what stays blank, why there are no hidden lines — then the sectional front view built in pencil order.

The evaluation calendar

Component	When	Weight	Book policy
Mid-sem test (90 min)	Sat 3 Oct 2026	20% last year — confirm	Closed (last year's sheet)
Everything else	TBA — no handout received yet; dates will come from the handout	—	—

Before anything else: check the licence

Autodesk dropped the "360" in January 2024 — the product is now just Autodesk Fusion. Tutorials, forum posts and menus will use both names interchangeably for years yet; they're the same software.

What matters more is which free version is installed, because two of them exist and they are not equivalent:

Version	What you get	Verdict
Education (students & educators)	Effectively the full commercial product — unlimited editable documents, drawings, exports, simulation, CAM.	This is the one you want. Free for 1 year, renewable annually for as long as you're enrolled.
Personal Use (hobbyist free tier)	Deliberately limited: a small cap on editable documents, restricted export formats, reduced drawing features.	Will quietly block coursework. If she signed up with a personal email rather than through education, this is probably what's installed.

How to check: open Fusion, click your account avatar (top right) and look at the plan name; or sign in at accounts.autodesk.com and look at Products & Services. If it doesn't say Education, apply with the BITS institutional email at autodesk.com/education before the first real assignment lands.

Diary note

The Education licence expires after one year and needs renewing while still enrolled — Autodesk emails a reminder 30 days out, and renewal can be started from that point. Worth knowing now so a dead licence never lands in the middle of a submission week.

What this course actually asks of you

Strip away the syllabus wording and a first Fusion course wants five separable skills. They're listed here in dependency order — each one leans on the one above it, which is also the order the pages below are meant to be read.

Skill	What "having it" looks like	Hardest part
1 · Knowing what Fusion is	You can say why editing a dimension changes the finished model, and you use the timeline on purpose.	Unlearning the instinct that CAD is drawing.
2 · Sketching	Every sketch you close is fully constrained — black, not blue — and you know which constraint to add next.	Constraints. This is where beginners lose the most time by far.
3 · Features	You look at a part and see the four or five operations that make it, in order.	Decomposition, not the commands themselves.
4 · Reading drawings	Three flat views plus dimensions → a solid in your head, unambiguously.	Spatial visualisation, which is trainable.
5 · Speed	Hands on shortcuts, orbit without thinking, model without hunting through menus.	Nothing but repetition. Genuinely just hours.

The pages

Read 1 → 2 → 3 in order; they build. Drawings (4) can be read any time; 5 needs 3 and 4 and is what the tutorial sheets actually examine. The drills are where the actual learning happens — the lessons only make the drills make sense.

1 · Lesson · ~40 min How Fusion thinks Parametric, history-based modelling from zero: the sketch → feature loop, the browser and the timeline, origin planes, bodies vs components. The page that makes every YouTube tutorial suddenly legible. 2 · Lesson · ~50 min · interactive Sketching and constraints Why your lines are blue, what all twelve constraints do, and degrees of freedom made visible — with a widget that walks a wobbly shape from 8 DOF down to 0 and locks it black. 3 · Lesson · ~45 min Features and design intent Extrude, revolve, sweep, loft; fillet, chamfer, shell, pattern, mirror — and the skill nobody teaches: looking at a part and seeing its feature tree before you touch the mouse. 4 · Lesson · ~45 min Reading engineering drawings Orthographic projection in first angle (the Indian standard — and the reason American tutorials will mislead you), section views, and dimensioning conventions. 5 · Lesson · ~50 min From drawing to model The tutorial-sheet skill: reading a dimensioned isometric of a full machine part — clevis, yoke, bracket — and turning it into an ordered feature plan. Five questions, the idiom table, and a worked decomposition with volume checkpoints. Drills · 8 parts · self-marking Rebuild drills Dimensioned parts of rising difficulty to model from scratch — each with its exact volume, so Fusion itself tells you whether you got it right. Self-marking practice. Drills · Level 2 · 4 parts · self-marking Rebuild drills — level 2 Machine parts climbing to tutorial-sheet difficulty — lug, rod support, clevis fork, bearing yoke — with staged volume checkpoints so mistakes surface at the feature that caused them. Reference · printable Shortcuts & navigation card The keys worth burning in, verified against Autodesk's own reference, Windows and macOS side by side.

How to practise this course

The single most useful habit, and it is not the obvious one:

The twenty-minute rule

Twenty minutes a day beats three hours on Sunday, and it isn't close. CAD fluency is motor learning — the same category as a musical instrument. Short daily repetitions consolidate; one long weekend session mostly produces fatigue and a model you can't reproduce on Monday.

A good twenty minutes: open Fusion, model one small thing end to end, close it. Not "watch a tutorial" — model. Watching is the trap that feels like progress.

Two more rules worth adopting early:

Never leave a sketch blue. Fully constrain every sketch before you extrude, even when it's tedious, even when the model looks fine. This one discipline prevents most of the mysterious breakage that makes people hate CAD.
Rebuild, don't just follow. After any tutorial, close it and build the same part again from memory. The second build is where the skill actually forms; the first is just watching with extra steps.

When the handout arrives

Bring it here and this guide gets: a proper syllabus map, the evaluation strategy (which changes what to prioritise — a lab exam rewards speed, a portfolio rewards finish quality), confirmation of whether prototyping/3D printing is separately assessed, and re-pointed practice tables. Until then these pages deliberately stay on ground that can't move.