BlockTalk Find Your Set

Free tool

LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Cauldron: Secret Potions Classroom

Checking

76464 Cauldron: Secret Potions Classroom

652 pieces in 166 part and color combinations, plus 2 minifigures.

LEGO counts 652 pieces. This inventory comes from a separate parts catalog and lists 661, including the 9 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

Show

Piece checklist

Plates 146 pieces

  • Plate 1 x 1 Black Part 3024 Element 302426 ×10
  • Plate 1 x 2 Black Part 3023 Element 302326 Also in Dark Bluish Gray ×9
  • Plate 1 x 3 Black Part 3623 Element 362326 ×4
  • Plate 2 x 2 Corner Black Part 2420 Element 242026 ×8
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate 1 x 12 Dark Bluish Gray Part 60479 Element 6133611 or 4666604 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 Also in Black ×35
  • Plate 1 x 5 Dark Bluish Gray Part 78329 Element 6413109 ×12
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×4
  • Plate 1 x 1 Dark Purple Part 3024 Element 6231376 or 4589621 ×2
  • Plate 1 x 2 Dark Purple Part 3023 Element 4655695 or 4589622 ×1
  • Plate 1 x 3 Dark Tan Part 3623 Element 6132768 or 4497086 ×3
  • Plate 2 x 2 Dark Tan Part 3022 Element 6047415 or 4497081 ×6
  • Plate 2 x 4 Dark Tan Part 3020 Element 4497077 or 4267874 ×2
  • Plate 1 x 1 x 2/3 with Open Stud Light Bluish Gray Part 86996 Element 6401023 ×4
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×2
  • Plate 2 x 2 Corner Light Bluish Gray Part 2420 Element 4211353 ×12
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×6
  • Plate 1 x 1 Reddish Brown Part 3024 Element 4221744 ×3
  • Plate 1 x 10 Reddish Brown Part 4477 Element 4223683 ×4
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×4
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×8

Plates Special 80 pieces

  • Bracket 1 x 2 - 1 x 2 Black Part 99781 Element 6016172 ×4
  • Plate Special 1 x 1 Rounded with Handle Black Part 26047 Element 6157554 ×4
  • Plate Special 1 x 2 with Pin Hole on Top Black Part 11458 Element 6114987 ×8
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Half Hollow Anti-stud] - Updated Version Black Part 4304 Element 6469445 ×4
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Blue Violet Part 18674 Element 6593602 ×3
  • Bracket 1 x 1 - 1 x 1 Dark Bluish Gray Part 36841 Element 6413106 ×4
  • Bracket 1 x 2 - 2 x 2 Inverted Dark Bluish Gray Part 99207 Element 6308045 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] Dark Bluish Gray Part 60897 Element 6489464 or 6296892 ×4
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Bluish Gray Part 60478 Element 4521187 ×4
  • Plate Special 2 x 2 with Only 2 studs Dark Bluish Gray Part 33909 Element 6309059 ×4
  • Bracket 1 x 1 - 1 x 1 Dark Purple Part 36841 Element 6336391 ×1
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Tan Part 18674 Element 6132767 ×4
  • Bracket 1 x 1 - 1 x 1 Inverted Light Bluish Gray Part 36840 Element 6335328 ×4
  • Plate Special 1 x 2 with Clip Horizontal on Side Light Bluish Gray Part 11476 Element 6313114 or 6028812 ×8
  • Plate Special 1 x 4 with 2 Studs with Groove [New Underside] Light Bluish Gray Part 41740 Element 6257593 ×6
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Light Bluish Gray Part 18674 Element 6183782 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×8
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Reddish Brown Part 60478 Element 6102975 ×8

Plates Round Curved and Dishes 63 pieces

  • Dish 8 x 8 Inverted [Radar], Solid Studs, Squared Anti-stud Underside Black Part 3961a Element 6371716 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×8
  • Plate Round Corner 5 x 5 with 4 x 4 Round Cutout Black Part 80015 Element 6372045 ×8
  • Plate Round Half 4 x 8 Black Part 22888 Element 6133200 ×2
  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×1
  • Plate Round Corner 3 x 3 with 2 x 2 Round Cutout Dark Bluish Gray Part 68568 Element 6506037 ×8
  • Plate Round Corner 3 x 3 Dark Purple Part 30357 Element 6251900 or 6172776 ×1
  • Plate Round Corner 4 x 4 Dark Purple Part 30565 Element 6584946 or 6109933 ×3
  • Plate Round 4 x 4 with Pin Hole Dark Tan Part 60474 Element 6232138 ×2
  • Plate Round 1 x 1 with Open Stud Pearl Gold Part 85861 Element 6190252 or 6141499 ×8
  • Plate Round Corner 5 x 5 with 4 x 4 Round Cutout Reddish Brown Part 80015 Element 6528540 ×8
  • Plate Special 1 x 2 Rounded with 2 Open Studs Reddish Brown Part 35480 Element 6248944 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Tan Part 4032a Element 4140562 or 403205 ×1
  • Plate Round 1 x 1 with Solid Stud Trans-Dark Blue Part 6141 Element 6514055 or 6240214 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 ×3
  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 ×2

Bricks Sloped 50 pieces

  • Brick Sloped 18° 2 x 1 x 2/3 Black Part 5404 Element 6513918 or 6483559 ×12
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×4
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Black Part 15672 Element 6069000 or 4653087 ×4
  • Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection Black Part 4287c Element 428726 ×4
  • Brick Sloped Inverted 33° 3 x 2, Connections between Studs, Round Bottom Pin Black Part 2752 Element 6435928 ×2
  • Brick Sloped 33° 3 x 1 Dark Bluish Gray Part 4286 Element 4211045 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Round Hollow Bottom Pin, Bar-sized Stud Holes] Dark Bluish Gray Part 76959 Element 6622623 ×4
  • Brick Sloped Inverted 33° 3 x 1 with Internal Stopper and No Front Stud Connection Light Bluish Gray Part 4287c Element 4211489 ×4
  • Brick Sloped Inverted 45° 2 x 1 Reddish Brown Part 3665 Element 4211222 ×12

Bricks Round and Cones 39 pieces

  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Black Part 25214 Element 6179182 ×4
  • Brick Round 2 x 2 Dome Bottom [Open Stud] Black Part 15395 Element 6102341 ×2
  • Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs Black Part 48092 Element 6252902 or 6173190 ×4
  • Brick Round Corner 5 x 5 Macaroni with 1/3 Inner Side Black Part 5532 Element 6534684 ×4
  • Brick Round Corner 6 x 6 with 33° Slope and Facet Cutout Black Part 95188 Element 6605464 or 6337391 ×16
  • Brick Round Corner, Curved 3 x 3 x 1 Quarter Circle Black Part 76797 Element 6385597 ×4
  • Brick Round 2 x 2 Dome Bottom [Open Stud] Reddish Brown Part 15395 Element 6365627 ×1
  • Brick Round 2 x 2 Dome Top, Vented Stud Reddish Brown Part 3262 Element 6429060 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Hollow Stud Trans-Bright Green Part 30151b Element 6514279 or 6290270 ×1
  • Brick Round 2 x 2 x 1 2/3 Dome Top, Hollow Stud Trans-Clear Part 30151b Element 6514278 or 6286876 ×2

Bricks Special 33 pieces

  • Brick Special 1 x 1 with Studs on 2 Adjacent Sides Black Part 26604 Element 6187572 ×4
  • Brick Special 1 x 1 with Stud on 1 Side Dark Bluish Gray Part 87087 Element 4558955 ×7
  • Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side Dark Bluish Gray Part 22885 Element 6572522 ×2
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Bluish Gray Part 30414 Element 4210725 ×6
  • Brick Special 1 x 1 with Clip Horizontal Light Bluish Gray Part 60476 Element 6320306 or 4535764 ×1
  • Brick Special 1 x 2 with 2 Studs on 1 Side Light Bluish Gray Part 11211 Element 6015344 ×5
  • Brick Special 1 x 1 with Scroll with Open Stud Reddish Brown Part 20310 Element 6172757 ×4
  • Brick Special 1 x 1 with Stud on 1 Side Reddish Brown Part 87087 Element 6062574 or 4618545 ×4

Tiles Round and Curved 33 pieces

  • Tile Round 1 x 1 Black Part 98138 Element 6284070 or 6139403 ×1
  • Tile Round 1 x 1 Quarter Black Part 25269 Element 6172383 ×2
  • Tile Round 2 x 4 Black Part 66857 Element 6331483 ×1
  • Tile Round 6 x 6 with Gold Hogwarts Symbol Print Black Part 7212pr0005 Element 6578911 ×1
  • Tile Round 1 x 1 Half Circle Blue Violet Part 24246 Element 6593603 ×3
  • Tile 3 x 3 Curved, Macaroni Dark Purple Part 79393 Element 6472509 ×1
  • Tile Round 1 x 1 Quarter Dark Purple Part 25269 Element 6199891 ×1
  • Tile 2 x 2 Curved, Macaroni Dark Tan Part 27925 Element 6395753 ×8
  • Tile 4 x 4 Curved, Macaroni Dark Tan Part 27507 Element 6490609 ×4
  • Tile Round 1 x 1 Reddish Brown Part 98138 Element 6284586 or 6133854 ×4
  • Tile Round 1 x 1 Tan Part 98138 Element 6284573 or 6139649 ×3
  • Tile Round 1 x 1 Trans-Purple Part 98138 Element 6514201 or 6325432 ×4

Bricks Wedged 32 pieces

  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Black Part 29120 Element 6181720 ×8
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Black Part 29119 Element 6181713 ×8
  • Brick Wedged, Curved 2 x 2 with Stud Notch Left Black Part 5095 Element 6507846 or 6477763 ×4
  • Brick Wedged, Curved 2 x 2 with Stud Notch Right Black Part 5093 Element 6513908 or 6477759 ×4
  • Brick Wedged, Sloped 4 x 4 Pointed Black Part 22391 Element 6408603 or 6142318 ×8

Bricks Curved 30 pieces

  • Brick Arch 1 x 6 Raised Arch Dark Bluish Gray Part 92950 Element 4620760 ×2
  • Brick Curved 1 x 2 x 1 with Curved Top Dark Purple Part 5841 Element 6563353 ×3
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Purple Part 11477 Element 6057390 ×2
  • Brick Curved 2 x 2 x 2/3 Dark Purple Part 15068 Element 6182217 ×1
  • Brick Curved Inverted 2 x 2 x 2/3 Dark Tan Part 32803 Element 6356427 ×8
  • Brick Arch 1 x 3 x 3 [Gothic] Light Bluish Gray Part 13965 Element 6225228 ×8
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Reddish Brown Part 11477 Element 6069984 ×4
  • Brick Curved 2 x 2 x 2/3 Reddish Brown Part 15068 Element 6146858 ×2

Bricks 24 pieces

  • Brick 1 x 1 Black Part 3005 Element 300526 ×4
  • Brick 1 x 2 Black Part 3004 Element 300426 ×2
  • Brick 1 x 3 Black Part 3622 Element 362226 ×2
  • Brick 1 x 6 Black Part 3009 Element 300926 ×4
  • Brick 2 x 2 Corner Blue Part 2357 Element 4558606 or 4533323 ×2
  • Brick 1 x 1 Dark Purple Part 3005 Element 6084028 or 4640738 ×1
  • Brick 1 x 2 Dark Purple Part 3004 Element 6104154 or 4640739 ×1
  • Brick 2 x 6 Green Part 2456 Element 4181135 or 4142867 ×1
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×1
  • Brick 2 x 2 Corner Reddish Brown Part 2357 Element 4211200 ×4
  • Brick 2 x 2 Corner Yellow Part 2357 Element 235774 or 235724 ×2

Minifig Accessories 20 pieces

  • Equipment Wand [Individual] Black Part 36752a ×6
  • Food Egg with 1.5mm Hole [Plain] Bright Light Orange Part 24946 Element 6453246 ×1
  • Equipment Wand [Individual] Dark Tan Part 36752a ×6
  • Equipment Cutlery - Spoon, Flat Bottom Flat Silver Part 80179 Element 6363148 ×1
  • Equipment Candlestick Reddish Brown Part 37762 Element 6422088 ×6

Tiles Special 18 pieces

  • Tile 1 x 2 with Stud Notch Left Black Part 5091 Element 6510125 or 6458187 ×1
  • Tile 1 x 2 with Stud Notch Right Black Part 5092 Element 6510139 or 6458188 ×1
  • Tile Special 2 x 2 Corner with Cut Corner - Facet Black Part 27263 Element 6166859 ×4
  • Tile Special Round 1 x 1 with Hollow Bar Black Part 20482 Element 6186675 or 6167933 ×10
  • Tile Special 1 x 1 with Clip with Rounded Edges Reddish Brown Part 15712 Element 6348057 or 6071274 ×1
  • Tile Special Round 1 x 1 with Hollow Bar Reddish Brown Part 20482 Element 6186673 or 6162975 ×1

Technic Special 11 pieces

  • Technic Ball Joint Blue Violet Part 32474 Element 6593601 ×3
  • Technic Plate 1 x 5 with Smooth Ends, 4 Studs and Centre Axle Hole Reddish Brown Part 32124 Element 6280388 or 6035580 ×8

Bars, Ladders and Fences 10 pieces

  • Bar 2L with Stop in Center Black Part 78258 Element 6371584 ×1
  • Bar 3L Blue Part 87994 Element 6345634 ×1
  • Bar 4L (Lightsaber Blade / Wand) Pearl Gold Part 30374 Element 6147169 or 4600267 ×2
  • Bar 3L Reddish Brown Part 87994 Element 6428805 or 6075208 ×6

Plates Wedged 10 pieces

  • Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×2
  • Wedge Plate 4 x 4 Cut Corner Dark Bluish Gray Part 30503 Element 4210728 ×8

Technic Connectors 10 pieces

  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×2
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×2
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Black Part 65487 Element 6282140 ×1
  • Technic Pin Connector Round [Slotted] Reddish Brown Part 62462 Element 6173132 or 6055781 ×5

Technic Axles 8 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×2
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×4

Technic Pins 7 pieces

  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 ×5
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×2

Plants & Trees 5 pieces

  • Bar 1L / Stem with 3 Sprouts/Prongs Bright Green Part 68211 Element 6434871 ×1
  • Plant, Flower, Plate Round 1 x 1 with 5 Petals Lavender Part 24866 Element 6214235 ×4

Tiles 5 pieces

  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×4
  • Tile 1 x 1 with Groove Reddish Brown Part 3070b Element 4211288 ×1

Technic Beams 4 pieces

  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×4

Animal / Creature Body Parts 2 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small Black Part 53451 Element 6270103 or 4568385 ×2

Panels 2 pieces

  • Panel 1 x 2 x 1 [Rounded Corners] Black Part 4865b Element 6146220 ×2

Windows and Doors 2 pieces

  • Glass For Frame 1 x 3 x 3 Black Part 51266 Element 6581842 or 6476095 ×1
  • Window Frame 1 x 3 x 3 Reddish Brown Part 51239 Element 6502373 ×1

Animals / Creatures 1 piece

  • Animal, Otter [Plain] Opal Trans-Light Blue Part 67631 Element 6607286 ×1

Energy Effects 1 piece

  • Smoke / Bubbles with Anti-Stud Opal Trans-Purple Part 5533 Element 6587780 ×1

Hinges, Arms and Turntables 1 piece

  • Hinge Brick 1 x 2 Locking with 2 Fingers Vertical End, 7 teeth Light Bluish Gray Part 54671 Element 6267142 ×1

Minifig Heads 1 piece

  • Minifig Head with Lime/Sand Blue Dragon Flies / Tan Label Print Trans-Clear Part 28621pr0044 Element 6578912 ×1

Rock 1 piece

  • Plate Special 8-Sided Crystal/Gem 1 x 1 x 2/3 Opal Trans-Clear Part 65092 Element 6514349 or 6287309 ×1

Stickers 1 piece

  • Sticker Sheet for Set 76464-1 [No Color/Any Color] Part 10115116 Element 6578993 ×1

Technic Bricks 1 piece

  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×1

Tools 1 piece

  • Brick and Axle Separator v2.0 Dark Turquoise Part 96874 Element 6254100 ×1

Minifigures 2 figures

  • Hermione Granger, Gryffindor Robe Closed, Skirt Minifigure, checked as a whole figure ×1
  • Professor Severus Snape, Long Robes over Black Vest Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy