| Adjusted Cut Drop: | When joining patterned fabric or matching 2 patterned fabric panels the fabric cut drop needs to be adjusted (increased) so it is a whole number of pattern repeats. Although calculated in cm, it is always a whole number of pattern repeats. So each cut drop will always finsh at the same point on the pattern. Note this can be different if using half drop pattern repeat fabric. |
| Blind Length: | This is the finished length of the blind when it is made.ie the length of the blind when hanging down. (from blind top edge to bottom) We sometimes refer to it as the "FINISHED BLIND LENGTH". |
| Blind Width: | The finished width of the blind when it is made. We sometimes refer to it as the "FINISHED BLIND WIDTH". |
| Bottom Flap: | The last bottom section of a blind when it protrudes below the pleat fold infront of it. image >> |
| Buckram Depth (calculator entry): | We need to know this because on a hand headed lined curtain we fold the fabric back over the buckram. (see tutorials) For a sill length curtain we would generally use 3-4inch (8-10cm) buckram, for a full length curtain 5-6inch (13-15cm) buckram. For a tape heading (eg: pencil pleat) put in a value of 0cm as the making method is different. |
| Cascade Increment: | On a cascade roman blind the pleats between the top pleat and the bottom flap are staggered causing cascade sections, the depth of these cascade sections is the cascade increment. image >> |
| Fabric Cut Drop: | The length of fabric that is cut from the roll to make a blind or curtain. Cut drop is the sum of the Finished curtain or blind length plus heading and hem allowances. |
| Fabric Cut Width: | The width the drop of fabric is cut to, to make a blind or curtain. |
| Fabric Width: | Fabric width is the width fabric is supplied on the roll. Fabric usually comes in usable widths of approx 137cm. Sometimes though it may be supplied in double widths approx 280cm usable width, these are useful to avoid making fabric joins. By usable width we mean the width from join to join if joining panels, this is particularly important with patterned fabric as the fabric will only be able to join at a specific point on each edge. |
| Finished Blind Length | The finished length of the blind when it is made.ie the length of the blind when hanging down. (from blind top edge to bottom) |
| Finished Blind Width | The finished width of the blind when it is made. ie the width of the blind from one side to the other. |
| Finished Curtain Length: | The length of the curtain once made (finished). The length if you measure from the top of the curtain to the bottom when it is hanging. |
| Finished Curtain Width (FCW): |
Finished Curtain Width = The width of the made up curtain panel after it is pleated.
DO NOT confuse this with the width of the curtain panel before it is pleated which is much wider. |
| Flat Panel Width(PAN): | The width of the made up curtain panel (eg side turns in,lining attached etc) laid flat before it is pleated (or pulled if a tape header). |
| Fullness Ratio | The fullness ratio of a curtain determines how full or skimpy it will be. Fullness ratio is the ratio of the "width of fabric used to make a curtain" to the "width of the pole". |
| Heading Allowance | The length of fabric that is used to form the heading on a curtain. |
| Headrail Allowance | The distance from the top of the blind down to where the folds gather. See more>> |
| Hem Allowance(Blind Fabric) | The length of fabric that is used to form the hem on the bottom of the blind.
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| Hem Allowance(Blind Lining) | The length of fabric that is used to form the hem on the bottom of the blind lining.
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| Hem Allowance(Curtain Fabric) | The length of fabric that is used to form the hem on the bottom of the curtain.
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| Hem Allowance(Curtain Lining) | The length of fabric that is used to form the hem on the bottom of the curtain lining.
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| Hook Drop: | Hook drop is the distance from the hook on the curtain down to the bottom of the curtain. When measuring the hook drop from the curtain pole, it is the distance from the curtain ring eyelet where the hook attaches down to the bottom of the curtain. When measuring the hook drop on the curtain, it is the distance from the curtain hook on the curtain heading down to the bottom of the curtain. (note you are measuring from the point of the hook where it connects with the curtain ring eyelet) |
| Hook to Top | Hook to top is the distance from the curtain hook (point on hook where it attaches to curtain ring) to the top of the curtain. This measurement will affect whether the curtain can stack back under a curtain pole or track. |
| Leading Edge | The distance from the last pleat of a hand pleated curtain to the inside leading edge of the curtain. This forms a flap on the leading edge of the curtain. With a pair of curtains these flaps overlap when the curtains are pulled together. We generally use a LEADING EDGE of 8cm on our curtains. |
| Overlap | The distance a pair of curtains cross over at the centre. The overlap helps exclude light and draughts. |
| Pattern Repeat | The length before the pattern repeats itself veritcally on the fabric. The pattern repeat is sometimes specified as part of the fabric details. It can also easily be measured with a tape. Image>> NOTE - our calculations and CALCULATORS are based on standard fabrics with normal vertical pattern repeats that can be joined at the same position on the pattern on each side of the roll. If your fabric has a HALF DROP PATTERN REPEAT where the pattern doesn't match exactly on each side but is shifted down half a pattern repeat (drop) where it ends on the sides, please read our article on HALF DROP PATTERN REPEATS for information on how to deal with calculating fabric quantities and how to cut and join the HALF DROP REPEATS. We have also created a specialist HALF DROP PATTERN REPEAT FABRIC CALCULATOR for course subscribers |
| Add a Pattern Repeat (Fabric Qty): | When calculating the quantity of fabric for a roman blind or curtain we generally add 1 pattern repeat to the total to position the pattern on the curtain or blind. |
| Pleat Depth | The distance from the top of the curtain to the bottom of the pleat where it pinches. Pleat Depth Image >> |
| Pole Length | The length of pole the curtain rings run along. Pole Length does not include the finials or end caps. |
| Rod Pocket | A rod pocket is formed on the lining on the back of a blind for the rods to slide in to and help the blind hold it's shape. There are 2 types of rod pocket
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| Return | The return is the flap on the outside edge of a curtain. It is the distance from the last pleat to the outside edge of the curtain. We generally use a RETURN of 8cm on our curtains unless the curtain is being returned to the wall. |
| Top Pleat (Roman Blind) | The top pleat is the front pleat at the top of the blind when it is pulled up, on a standard folds (inline) blind it is the length of the blind when pulled up and is longer than the other fold sections because it includes the headrail allowance. image >> |
| Top Section (Roman Blind) | The top section is the depth of the blind when it is pulled up. image >> |
| Trimming Allowance | The allowance added to the cut drop to trim each fabric/lining/interlining drop when making. Note we do not include a trimming allowance for a patterned fabric as you almost always have spare fabric from the adjusted cut drops or extra pattern repeat ordered to place the pattern. In the workroom we genrally use a 6cm trimming allowance |
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