CNC interiors - work procedure

Materials and Naming

• important for weight calculation
• for each type of plywood we have the following sheeting options:
  • panel simple, no sheeting
  • panel with sheeting per thickness
  • NOTE: if sheeting is applied then it is always applied on BOTH sides (otherwise panel is unstable)
• thickness is always panel thickness without sheeting
• use 3 character abbreviation for wood type:
  • BIR - birch
  • POP - poplar
  • OCO - ocoume
  • WIS - wisaplex
• naming:
  • thickness in mm (2 characters)
  • wood type (3 characters)
  • sheeting (optional):
    • 2x white
    • 1x (colour code)
    • 2x (colour code)
• naming example:
  • 15 BIR - 15mm birch panel, no sheeting
  • 04 BIR 1x661 - 4mm birch panel, sheeting one side colour 661, other side sheeting white
  • 09 OCO 2x313 - 9mm ocoume panel, sheeting both sides colour 313

U P D A T E with example weight calculation

Nest

• required info:
  • panel name - on seperate layer (miller request)
  • material
  • panel size
  • part codes
  • help info - required by us but not by client
    • reference lines
    • grain direction
    • colour

• layer use:
  • contour panel
  • contour outside
  • contour inside
  • contour recess (depth in layer name? example Z=8.5, measured from milling table)
• color use? CNC uses layers or colors? For path CNC we should use contours, not offsets, recess contours also to be a closed loop and always inside cut?
• vertical panel orientation, saves space in drawing
• single colour: indicate which side facing upward
• currently we create an offset for miller, this offset to be on layer MARO (HU for cutter) + diameter of tool example 'MARO 20'

Milling

• use 1 cutter of Ø16 in order to be able to cut slots for 17mm thick material OR use 2 cutters: 1 of Ø18 and 1 of Ø10?

Presentation

• all expansions and nests in 1 file
• presentation to yard? assembly drawings? title blocks? 'Centreboard yard prefers a plotted expansion drawing A1 or A2 format (7-7-2011)
• send CTB file for correct printing of our drawings
• key for nest
• key for abbreviations:
  • material
  • colour codes example: 661 is Abet 661 Micro
• weight data
• center of gravity
• reports
  • which part is in which panel (xls format)

Additional jobs

• edging
• edge bevel
• hinge cups
• push button latch hole

• hardware lists
• interior weight
• interior center of gravity
• equipment lists

ShipConstructor work method improvements

• use better grain direction icon (symmetry)
• create a unit for each space - then it is easy to nest per space when desired
• split cabins in several hull/crv plate groups (per colour? makes it easier to apply colour codes and grain direction icons) - this reduces file size which works faster and more people can work on the project to speed up things
• create crv_plt for sole/wall/ceiling/furniture? Then peopel can work in parallel on 1 cabin to speed up things
• xref nest drawings in approval drawing

Rhinoceros

• layer name = panel type?

Modeling and drafting

• modifications are done ALWAYS in Rhino model, ShipConstructor Hull AND ShipConstructor Nest, 3D models MUST be accurate in every application

Issues

• SC hull - contours of planar parts can change after expansion, especially radi - workaround: use planar groups for ALL parts containing radi

Checklist

• all parts with colour:
  • indicate grain direction
  • indicate colour
• nest:
  • check if all parts are nested
  • check grain direction
  • check part contours for irregularities created in hull (for example: radi)
  • single colour:
    • check if part is not mirrored in nest (colour on correct side)

Bound Approval

• check and modify where necessary part contours (for example: radi) mark these in the approval?!

Remarks list

• goal: to communicate remarks with client and to catogorize them in order to see where improvements need to be made
• table
  • vertical - part list
  • horizontal - remarks + categories
• categories:
  • design
  • 3D modeling
  • expansion
  • nest
  • milling preparation
  • presentation (info for carpenter)