Leta

Drawing

A drawing is a document of its own, in a window of its own, with Layout, Annotate, Sketch and Publish tabs. Its views stay tied to the part or assembly they show, and its dimensions and notes follow the model when it changes.

Sheets of drawings

A new drawing of a part starts with its front, top and right views and a pictorial laid out on the sheet; a sheet-metal part also gets a sheet with its flat pattern and bend table. The drawings below were made in Leta by an AI app through Leta Assist and exported as they are. Each opens full size, and its PDF is linked under it.

Machining drawing of a cast crankcase half with two section views, a detail view, geometric tolerances, surface finish symbols and a revision table
A cast crankcase half: two sections, a 2:1 detail, position tolerances to datums, surface finish and a revision table. Its second sheet has ordinate dimensions and a hole table. PDF
Inch drawing of an engine's master rod with limit dimensions, position and parallelism tolerances and two sections
An engine's master rod in inches: limit dimensions on both bores, position and parallelism tolerances, a tapped hole callout and a removed section. PDF
Drawing of a machined manifold block with an offset section, hole callouts, baseline dimensions and a pictorial
A hydraulic manifold block: an offset section through its ports, callouts for counterbored, tapped and drilled holes, and baseline dimensions. PDF
Weldment drawing of a kart's tube frame with weld symbols, a detail view and a shaded pictorial
A welded kart frame of 4130 tube on an A2 sheet, with fillet weld symbols, a 2:1 detail and welding notes. PDF
Sheet metal flat pattern drawing with bend lines tagged B1 to B9, a bend table and ordinate dimensions
A sheet-metal cover's flat pattern, its bend lines tagged B1 to B9 beside the bend table. Its second sheet shows the formed cover. PDF
Drawing sheet of a wooden propeller in five display styles, from shaded to wireframe, with a bill of materials
A wooden propeller in five display styles, from shaded with edges to wireframe, with its bill of materials. PDF
Leta's drawing window: the Layout tab, a drawing tree listing two sheets with their views, sections, annotations, revision table and hole table, and sheet 1 of a crankcase drawing
The drawing window: the Layout tab, the drawing tree, and a tab for each sheet.

Views and sections

Hidden lines are worked out exactly, in the background, and edges stay tied to the model's own edges, so a dimension on a view keeps its place when the part changes.

  • Base, projected and pictorial views
  • Full, offset, half, aligned, removed and broken-out sections, hatched
  • Sections cut in place by a plane, or by a sketch for a stepped cut
  • Detail, auxiliary, cropped and broken views
  • Shading with edges, shading in the model's appearances, hidden line, no hidden and wireframe
  • Tangent edges solid, thin or removed
  • Views turned on the sheet, scales typed as 1:3, 2.5:1 or 1/20
  • Any configuration of a part, view by view
  • Flat pattern views with bend notes
  • Draft views for very large models

Dimensions and annotation

Dimensions, callouts and symbols are placed on the model's edges and points, and anything that loses its reference is listed in red, never moved without saying so.

Close view of a crankcase drawing: toleranced bearing seat diameters with position tolerance frames to datums A and B, and the section lines A-A and B-B
Toleranced bearing seats on a crankcase half, with position tolerances to datums A and B.
  • One Dimension tool, and ordinate, baseline and chain dimensions with Arrange
  • Tolerances: symmetric, plus-minus, limits and basic
  • Hole, thread, chamfer and round callouts and center marks from the model
  • Threads drawn by convention
  • Feature control frames with all fourteen characteristics, and datum features
  • Surface finish and weld symbols
  • Notes with several leaders, balloons and revision clouds
  • Dimensions and notes on the lines a section cuts
GD&T and annotationDimensions, tolerances, feature control frames, welds, finishes and notes.GD&T and annotation

Tables

Tables read the model, so a bill of materials, a hole table or a bend table changes with it.

  • Bills of materials, flattened, top level or nested, numbered to match the balloons
  • Hole tables and bend tables
  • Revision tables
  • Config tables, for a tabulated drawing of a part's sizes

Drawings of assemblies

An assembly drawing shows each view in the configuration or representation chosen for it, with item numbers that match the bill of materials.

Exploded assembly drawing of a carburetor with dashed trail lines, numbered balloons and a bill of materials
A carburetor's exploded view with trail lines, balloons and a bill of materials of 25 rows. Its second sheet has a section through the body. PDF
Assembly drawing of a kart rear axle in a broken view with chain dimensions, a section, balloons and a bill of materials
A kart's rear axle in a broken view whose dimensions read true lengths across the break, with a section, balloons and its bill of materials. PDF
  • Exploded views with their trails
  • Balloons and item numbers tied to the bill of materials
  • A configuration or a partial representation for each view
  • Sections of assemblies, each part hatched on its own

Sheets, templates and line styles

Drawings follow a company's own standards: its title block, its layers and its line weights.

  • ISO A4 to A0, ANSI A to E and custom sheet sizes; first- or third-angle projection
  • Templates with a company's own title block, whose fields fill themselves
  • A title block layout editor that splits, joins and moves cells, and holds a logo
  • Layers, and line styles for whole kinds of line or single lines
  • Hatch patterns, ISO 128 and the ANSI material symbols among them, in sections or any closed area
  • Lines, arcs, splines, polygons and slots sketched on a view or the sheet, with offset, trim, mirror, fillet and chamfer

Publishing

Drawings go out at true scale.

  • PDF, with searchable text
  • DXF, R2000 or R12
  • SVG
  • PNG at 96 to 600 dpi
  • Printing

See it on your own parts

Beta builds go out by email. Say what you design and what you use now.

Ask for the beta Licensing