Steam Engine (7750): parts list and STL files

Set 7750, Steam Engine, from 1980, has 268 pieces in 95 kinds of part and colour. Here is every part, with the ones you can 3D print at home and the ones to buy.

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Free: an STL file for every part you can print, the parts list and a BrickLink shopping list for the rest. Pro adds print-ready plates for a 256 mm bed and our printing guide. About ProYour Pro includes the print-ready plates.

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Steam Engine, built (3D picture) — What it looks like built. A 3D picture, not a photo, made from the LDraw model by Steffen (CC BY 2.0).

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208to print

60to buy

0spares

95kinds

208 to print, 60 to buy, 0 spares. Print: plain bricks, plates and beams you can make on a home 3D printer. Buy: clear, printed, rubber, electric and very thin parts, which are better ordered. Spares are the extras in the box.

Every part in set 7750

Parts in set 7750, Steam Engine
Colour	Part	Qty	Print or buy
Black	3004 Brick 1 x 2	14	Print
Black	3700 Brick 1 x 2 [1 Pin Hole]	9	Print
Black	3009 Brick 1 x 6	8	Print
Black	3005 Brick 1 x 1	6	Print
Black	3008 Brick 1 x 8	6	Print
Red	3010 Brick 1 x 4	6	Print
Black	3037 Brick Sloped 45° 2 x 4	6	Print
Black	4175 Plate Special 1 x 2 with Ladder	6	Print
Black	3039 Brick Sloped 45° 2 x 2	5	Print
Red	3068b Tile 2 x 2 with Groove	5	Print
Black	29 Window 1 x 1 x 2, Short Lip [no Glass]	4	Print
Red	3001a Brick 2 x 4 without Cross Supports	4	Print
Black	3010 Brick 1 x 4	4	Print
Black	3022 Plate 2 x 2	4	Print
Red	3022 Plate 2 x 2	4	Print
Black	3034 Plate 2 x 8	4	Print
Red	3069b Tile 1 x 2 with Groove	4	Print
Black	3297 Brick Sloped 33° 3 x 4	4	Print
Black	3623 Plate 1 x 3	4	Print
Red	3710 Plate 1 x 4	4	Print
Black	3795 Plate 2 x 6	4	Print
Red	3020 Plate 2 x 4	3	Print
Black	3021 Plate 2 x 3	3	Print
Black	3023 Plate 1 x 2	3	Print
Red	3034 Plate 2 x 8	3	Print
Red	3666 Plate 1 x 6	3	Print
Black	3710 Plate 1 x 4	3	Print
Red	3795 Plate 2 x 6	3	Print
Black	3941 Brick Round 2 x 2 with Axle Hole	3	Print
Red	3008 Brick 1 x 8	2	Print
Black	3020 Plate 2 x 4	2	Print
Red	3023 Plate 1 x 2	2	Print
Black	3024 Plate 1 x 1	2	Print
Black	3031 Plate 4 x 4	2	Print
Black	3040a Brick Sloped 45° 2 x 1 without Bottom Pin	2	Print
Red	3062b Brick Round 1 x 1 Open Stud	2	Print
Red	3063b Brick Round Corner 2 x 2 Macaroni with Stud Notch	2	Print
Black	3068b Tile 2 x 2 with Groove	2	Print
Black	3134 Brick Special 1 x 2 with Cable Holding Square Cutout	2	Print
Red	3622 Brick 1 x 3	2	Print
Black	3622 Brick 1 x 3	2	Print
Light Gray	3651 Axle and Pin Connector	2	Print
Red	3660b Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Small Stud Holes]	2	Print
Black	3660b Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Small Stud Holes]	2	Print
Black	3665a Brick Sloped Inverted 45° 2 x 1 [Old Type with Small Stud Hole]	2	Print
Black	3666 Plate 1 x 6	2	Print
Light Gray	3673 Pin without Friction Ridges Lengthwise	2	Print
Black	3701 Brick 1 x 4 [3 Pin Holes]	2	Print
Black	3704 Axle 2	2	Print
Light Gray	3713 Bush	2	Print
Black	3738 Plate 2 x 8 [7 Holes]	2	Print
Black	3794a Plate Special 1 x 2 with 1 Stud without Groove (Jumper)	2	Print
Black	3839a Plate Special 1 x 2 with Handles [Round Ends, Mid Attachment]	2	Print
Black	4085a Plate Special 1 x 1 with Clip Vertical [Thin Open O Clip]	2	Print
Red	4092 Tile Special 6 x 4 with Beveled Edges and 7mm Pin (Train Bogie Plate)	2	Print
Black	4162 Tile 1 x 8 with Groove	2	Print
Red	4175 Plate Special 1 x 2 with Ladder	2	Print
Black	73090a Brick Special 2 x 6 x 2 Weight with Bottom Openings and Center Seams on Ends	2	Print
Black	3001a Brick 2 x 4 without Cross Supports	1	Print
Black	3003a Brick 2 x 2 without Inside Ridges	1	Print
Black	3032 Plate 4 x 6	1	Print
Black	3035 Plate 4 x 8	1	Print
Red	3036 Plate 6 x 8	1	Print
Black	3062b Brick Round 1 x 1 Open Stud	1	Print
Black	3830 Hinge Brick 1 x 4 [Upper]	1	Print
Black	3831 Hinge Brick 1 x 4 [Lower]	1	Print
Black	3958 Plate 6 x 6	1	Print
Black	4181 Door 1 x 4 x 5 Train Left	1	Print
Black	4182 Door 1 x 4 x 5 Train Right	1	Print
Light Gray	458 Tyre for Train Wheel for Electric Train Motor 12V	6	Buy
Red	4022 Train Buffer Beam	4	Buy
Black	4023 Train Coupling	4	Buy
Trans-Clear	4171 Light Prism, Train, 1 x 3	4	Buy
Red	4180c05 Wheels Train Spoked Large (29mm D.) and Black Brick, Modified 2 x 4 [Red]	4	Buy
Black	73092 Magnet Cylindrical	4	Buy
Black	upn0258c12 Hose, Classic 4mm D. 12L	4	Buy
White	266ac01 Light Brick 2 x 2 Type 1 12V (Complete)	2	Buy
Black	3081c01 Window 1 x 2 x 2 Classic, Short Lip [with Glass]	2	Buy
Black	4170 Light Prism Brick, Train, 1 x 6 Holder	2	Buy
Trans-Clear	4183 Glass for Train Door Lip On Top and Bottom	2	Buy
Trans-Yellow	6141 Plate Round 1 x 1 with Solid Stud	2	Buy
Trans-Red	6141 Plate Round 1 x 1 with Solid Stud	2	Buy
Red	867 Wheel Train for 12V Electric Motor	2	Buy
Black	upn0256 Train, Steam Engine Cylinder, 1 x 2 Studs, Round Surfaces	2	Buy
Yellow	3626apr0001 Minifig Head Standard Grin Print [Solid Stud]	2	Buy
Blue	970c28 Hips and Blue Legs	2	Buy
Blue	973c28h01pr0026 Torso, Shirt, Patch Pocket Print, Blue Arms, Yellow Hands	2	Buy
[No Color/Any Color]	191925 Sticker Sheet for Set 7750-1	1	Buy
Dark Gray	3837 Equipment Shovel [Rounded Handle End]	1	Buy
Red	501a Motor, Train Base, 12V Modern Type I with 2 round contact holes	1	Buy
Trans-Clear	6141 Plate Round 1 x 1 with Solid Stud	1	Buy
Light Gray	765c15 Wire with 1-Prong Connectors, 12V / 4.5V 15L	1	Buy
Light Gray	765c28 Wire with 1-Prong Connectors, 12V / 4.5V 28L	1	Buy
Red	3833 Helmet, Construction / Hard Hat	1	Buy
Red	3624 Cap, Police Style	1	Buy

Print set 7750 at home

The set tool makes an STL file for each of the 208 printable pieces, sorted by colour, plus a shopping list for the 60 to buy. Free, no account, and it runs on your own phone or computer.

Get the free print files

Pro adds print-ready plates for a 256 mm bed. About Pro

Parts data: Rebrickable, and it can differ slightly from your box. Part shapes: LDraw Parts Library (CC BY 4.0). Browse all sets. Independent project, not sponsored, authorised or endorsed by any brick company.