In How to Warp a Chipboard Loom, I shared two ways to warp your loom: continuously and individually. The first allows you to weave on one side and the second allows you to weave the entire board, front to back. (Pictures to come.)
Individual warping takes some time. If you want to warp quickly and still use both sides of the loom, there is still another way to warp. If you purchased a prewarped loom from me at Stitches West, in Santa Clara, then you may have a loom warped in this manner.
In this third way to warp the loom, the warp is wrapped continuously around the loom. Normally, this leaves the reverse lacking one warp end. I've modified the looms, by drilling two neat holes at opposite ends. This allows the opposite ends of the warp to be anchored at the back of the loom and creates the missing warp end. It also creates an additional warp end. Whenever you weave, starting on the front, the tail of the additional end will be closest to your work when you turn the board over. Pair that extra with the line of warp next to it and weave over/under them as one. Treat the other end as what it is, a continuation of the end that began on the front of the board, passing over and under it on return, as you weave the back side.
Because this style of warping leaves no extra, you will need
to begin weaving at least an inch from the notches, and finish weaving
at least an inch from the notches, on the reverse. When you snip the
warp, close to the notches, this will leave you just enough to finish the ends of your cloth.
If you need longer ends, just begin and end farther from the notches.
When you are done, loosen the two anchored ends of yarn from the board, so that they hang free, and snip your work free from the loom, as close to the notches as possible. You can then trim the two longer ends to the same length as the others.
Chipboard Looms can be found at vika.etsy.com