Purlbed

Jacquard (Fair Isle) › Double-bed jacquard (no floats)

DBJ with plain (solid) backing

Back: one solid colour. Face: the motif; the motif colour may grin through less than with stripes. The ribber knits only during the passes of the "back" colour and slips during the other colour's passes. On Brother this means reversing the ribber PART buttons by hand at each colour change.

Machine types that can knit it

Demo swatch

Drawn for: Single bed (electronic) + ribber
Approximate preview worked out from the bed chart, not a photo.The colours are the point here: the preview shows the pattern, and the fabric itself lies flat.
Bed chart
1102030→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←→←Both beds (double jersey)1 square = 1 stitch × 1 row · read from the bottom · Electronic + ribber, 48 needles, half pitch
Needle notation, first steps
1. Rows 1–36: knit 36 rowsDouble jersey (all needles)carriage →ribbermainShowing needles L12–R12 of 48; repeat across the working area.

Steps

  1. Set up as DBJ.
  2. Back-colour passes: ribber PART buttons down (knit).
  3. Other-colour passes: ribber PART up (slip).
  4. Change colour and flip the ribber settings at the left every 2 passes.

The full card

What it looks like
Back: one solid colour. Face: the motif; the motif colour may grin through less than with stripes.
How it behaves
Double layer. The backing can be a different fibre (e.g. felting wool behind a non-felting face, then fulled).
How it works
The ribber knits only during the passes of the "back" colour and slips during the other colour's passes. On Brother this means reversing the ribber PART buttons by hand at each colour change.
Machines
Any ribber; manual lever change every 2 passes (tedious without automation). Colour changer recommended.
Parameters
back colour = one of the design colours or a dedicated extra colour; ribber row count per design row = 2 (back colour only).
Steps
1) Set up as DBJ. 2) Back-colour passes: ribber PART buttons down (knit). 3) Other-colour passes: ribber PART up (slip). 4) Change colour and flip the ribber settings at the left every 2 passes.
Charting
Backing chart = one solid colour cell per ribber row; pass column marks "RB knit" / "RB slip".
Limits and common problems
Long floats inside the fabric for the non-back colour where the main bed does not select it. Fine in short motifs; large solid areas of the non-back colour make tunnels [inference].

Written in our own words from machine manuals, knitting references and swatching. Knit a test swatch before a whole piece.

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