Some notes on the front packfront_pack

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diff --git a/source/accessories/bags/modular_front_pack/index.rst b/source/accessories/bags/modular_front_pack/index.rst
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+Modular Front Pack
+==================
+
+.. only:: html
+
+   .. contents::
+
+.. figure:: front_pack.jpg
+   :align: center
+
+This is a small day pack that can be used standalone or attached to the
+front of a :doc:`modular_backpack_base/index` 
+This is a basic day pack with MOLLE knock-off/compatible webbing, so
+that it can be expanded with accessories.
+
+Like the :doc:`modular_backpack_base/index` it isn't a beginner's
+project, as it requires quite some sewing confidence and a sewing
+machine able to sew through multiple layers of heavy materials and sew
+both straigt and zig-zag stitches.
+
+Materials
+---------
+
+You will need:
+
+* 60 cm outer fabric (e.g. coated cordura);
+* 70 cm lining fabric (e.g. ripstop nylon or uncoated, lightweight
+  cordura);
+* two pieces of rigid padding about 30 cm × 42 cm: a rigid foam, or a
+  rigid sheet plus softer foam
+* 2 meters 2.5 cm webbing;
+* 7 meters twill webbing to bind the raw edges:
+* 1 meter waterproof zipper plus sliders etc (to make a 90 cm long
+  zipper);
+* 33 cm round or thin elastic;
+* 1 handle or 25 cm 2.5 cm webbing;
+* termoplastic sewable feet;
+* 2 ladderlocks;
+* heavyweight sewing thread (regular all purpose thread isn't strong
+  enough).
+
+Pattern
+-------
+
+The pattern is available in the following formats:
+
+:download:`modular_front_pack.val.val`
+   valentina file where the measurements can be customized;
+:download:`modular_front_pack-copyshop.pdf`
+   A0 PDF file for copyshop printing;
+:download:`modular_front_pack-A4.pdf`
+   A4 tiled PDF file for home printing.
+
+the latter two formats are based on a finished measurement of 30 cm × 42
+cm × 5 cm (width × height × depth) with 1.2 cm for the zipper.
+
+Instructions
+------------
+
+.. tip::
+
+   Any time coated / water resistant fabric is involved, only use pins in
+   the sewing allowance, and use a long seam (e.g. 4 mm) to minimize holes
+   in the coating and preserve the water resistance.
+   Binder clips are useful to keep things together while sewing, and so is
+   masking tape, depending on the cases.
+   In the pictures you can see what I used in most cases.
+
+.. tip::
+
+   When working with webbing and edgebinding measure the amount you need,
+   cut and seal the edges with a flame to prevent fraying.
+
+.. tip::
+
+   When sewing TPU-coated fabric sometimes the machine may have issues
+   carrying it; in that case put a piece of tissue paper on the coating
+   while sewing and rip it out afterwards.
+
+Cut all fabric and lining parts according to the pattern, using the
+given sewing allowance (usually 2 cm).
+Cut the rigid padding about 5 mm smaller than the pattern.
+
+MOLLE panels
+^^^^^^^^^^^^
+
+Cut two extra front / back panels from the outer fabric; use either
+
+Print either the full pattern for a back panel with MOLLE slots, 
+:download:`molle_pattern_panel.svg` or the version on just one A4 sheet 
+:download:`molle_pattern_a4.svg`.
+
+Cut two extra front / back panels, and cut the MOLLE slots on it with a
+knife, optionally cutting the rounded edges with a punch.
+
+Heat-seal each edge with a hot hair station set at ?°C or a lighter
+flame.
+
+Sew the panels to the main front / back panels on the marked vertical
+lines.
+
+From now on, treat as one.
+
+Lining Pieces
+^^^^^^^^^^^^^
+
+Take the inner pocket lining piece, zigzag the top edge, fold it down 1
+cm and again 2 cm, sew 1-2 mm from the bottom fold to create a channel
+for the elastic.
+
+Place the elastic in the casing, put the wrong side of the pocket on the
+right side of the back panel lining with a pleat at the center bottom,
+sew all around with a seaming allowance of 1.5 cm, backticking over the
+elastic.
+
+Sides and Zipper
+^^^^^^^^^^^^^^^^
+
+Place the right side of the zipper on the right side of the sides place
+the right side of its lining on top of both; sew so that the zipper is
+sandwiched between the two layers and turn them inside out so that the
+zipper protudes.
+
+Insert the zipper pulls in the assembled top/sides.
+
+Baste the lining
+^^^^^^^^^^^^^^^^
+
+In this step we will attach all lining pieces to their fabric ones,
+wrong sides facing with a wide zig-zag stitch, so that they are easier
+to treat them as one while assembling the backpack and to prevent the
+raw edges from fraying before they are covered with tape.
+
+Sew the lining and fabric of the top/side panels on the remaining raw
+edges.
+
+Sew the lining to fabric of the bottom panel.
+
+Sandwitch the rigid padding between the lining and the fabric of the
+front panel, sew all around the edges.
+
+Sandwitch the rigid padding between the lining (including the pocket)
+and the fabric of the back panel, sew all around the edges.
+
+Shoulder straps
+^^^^^^^^^^^^^^^
+
+Sew two pieces of webbing 45 cm long to the sewing allowance at the top
+of the back panel, aligned with the MOLLE pattern.
+
+Cut two pieces of webbing 70 cm long, seal their edges.
+
+Put one end on the right side of one small triangle of fabric, so that
+one edge goes from one corner to the middle of the long side, and there
+are 5 cm of webbing beyond the long side.
+
+Fold the triangle in half, right sides facing, and sew 2.5 cm from the
+long edge.
+
+Turn the triangle inside out, topstitch near the edges of the webbing.
+
+Sew the lower strap triangles to the bottom of the sides of the back
+panel, just above the rounded off corner with a 1.5 cm allowance.
+
+Assemble the backpack
+^^^^^^^^^^^^^^^^^^^^^
+
+Place the bottom panel on the top/side panel, right (fabric) sides
+facing, sew on both short edges. Press the raw edges towards the
+bottom and bind them with twill webbing.
+
+Place the right (fabric) side of the top/bottom/sides on the right side
+of the back, sew all around. You may have to clip the raw edges near the
+curves before sewing.
+
+Open a few centimeters of the zipper.
+
+Place the right (fabric) side of the top/bottom/sides on the right side
+of the front, sew all around. As above if needed clip the raw edges
+before sewing.
+
+Bind the remaining raw edges with the twill webbing (this will require
+two pieces of twill webbing 157 cm long).
+
+Turn the finished backpack inside-out and enjoy it.
diff --git a/source/accessories/bags/modular_front_pack/molle_pattern_front_back_panel.svg b/source/accessories/bags/modular_front_pack/molle_pattern_front_back_panel.svg
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