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Last Edited: April 21, 2019, 1:23 pm
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Half Persian 2 Sheet 4 in 1 Tutorial
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HP2S4-1 is an unusual weave in terms of composition and behaviour. The sheet expands in the same fashion lengthwise as it does by width. This characteristic is common to weaves from the Japanese family, although HP2S4-1 still contains around the eye (AE) and through the eye (TE) connections, as found in Persian weaves, as well as a column/row structure with different grain directions. The sheet has a natural tendency to curl, and below AR of 5.0 the curl is forced. This can be taken advantage of by forming the weave into a tube, such as three-sided Tri-Force, or four-sided Power Tower/Half Persian 2 in 1 Sheet 4 Box.
Rings used in tutorial:
.080" (2.0mm) aluminum (5356)
3/8" (9.525mm) mandrel
.403" (10.2mm) ID
AR of 5.0
Recommended AR range: AR of 5.2 - AR of 5.7. Below 5.0 if a curly sheet is desired, however the weave locks up quickly in the low 4's. See Half Persian 2 Sheet 4 in 1 AR Comparison for more information. Note: These ARs are based on measured inner diameter, and measured wire diameter.
Starting with a length of Half Persian 2 in 1 Spine, add an AE ring to the top right two rings of the previous row.
Add another to the left of it. Notice immediately that the two rings added don't stay in any particular configuration relative to each other. This will be true of every AE row added. The next (TE) row will force these rings to behave properly.
And a third ring beside it.
Finish the row, including one ring on the far left which only passes through 1.
Please note: the original picture had to be replaced. This is why the sheet is longer here than in the other pics.
At this point you can opt to sew the two edges together to form Tri-Force. How to Join Half Persian 3-1 Sheet 5 to Make Square/Trianglemaille demonstrates how do to this with Half Persian 3 Sheet 5 in 1. Apply an HP2-1 up 1, down 1 connection instead of an HP3-1.
Flip the sheet over, keeping the previously added row to the top.
Now add the first ring in the TE row, European 4 in 1-style to the top left.
Add the second ring to the immediate right of the previous ring added.
Add four more rings to complete the row of TE connections.
Add the final ring of this row in the top left. It only passes through one ring.
As in step 1, add the first AE ring to the top right two rings.
As in step 2, add the second ring of this row immediately left of the one previously added.
Add four more rings to complete the row of AE connections.
Add the final ring of this row on the top right. It only passes through 1.
At this point you can opt to sew the two edges together to form Power Tower/Half Persian 2 in 1 Sheet 4 Box. Refer to How to Join Half Persian 3-1 Sheet 5 to Make Square/Trianglemaille and use an HP2-1 connection in place of the HP3-1 demonstrated.
Add the first ring in the next row at the top left, as performed in Step 6.
Complete the row. Don't forget the single ring connection at the top left.
Continue adding rows until you have the width you need. If you need to expand the weave lenghtwise, notice that the ring pattern expands in the same manner both ways. Add a row of AE connections, then a row of TE connections to secure everything in place. Depending on which set of rings you're currently adding, have the appropriate side of the sheet facing up.
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