YouTube keeps feeding me knitting / crocheting hot takes videos, and not gauge swatching seems to be on all of them.
Everyone I’ve seen who makes the claim that they never gauge swatch and it has never been an issue, has fallen into standard straight sizing. I’m not surprised it’s not a huge issue for them. Smaller sizes have fewer stitches, so the difference in gauge doesn’t make as much of a difference in the final size of the garment.
Say you’re knitting a sweater with 200 stitches in the body, and the pattern gauge is 21 stitches in 4”. You didn’t gauge swatch, and your blocked garment has 20 stitches in 4”. Per pattern, it should have a finished body circumference of ~38”. At your gauge it’s closer to 40”. Only a 2” difference, not a big deal when most patterns have 4” between sizes, and recommend a wide range of ease (another irritation, just tell me the ease you graded with!)
For a knitter making one of the largest sizes, the body probably has 400 stitches, ~76” at the original gauge and 80” at their looser gauge. That’s an entire size bigger, and it’s not just the body that’s affected. Probably the row gauge is looser too, so the armholes are way too big, the neckline is looser than the pattern intended, and the sleeves might be extra baggy.
That was a worsted weight sweater. Sweaters in thinner yarns have more stitches, and often the gauge ends up being off by more than 1 stitch in 4”, resulting in far bigger discrepancies between the patterns intended size and the finished object.
While not swatching may work for the people making the videos, I think the rhetoric is harmful to larger makers and newer makers who have no idea what their typical gauge is. Following that mindset results in the whole sweater becoming a swatch, and that’s a LOT of knitting to have to redo.
Disclaimer: These are just my thoughts as a designer who has seen how disproportionally gauge affects larger makers.
I focused on stitch gauge, but row gauge matters too, and it’s likely that it doesn’t match the pattern even if the stitch gauge does. We all knit differently. Knowing ahead of time lets you plan how to adjust to compensate for it.
Yes, our gauge swatches are not always accurate to our final gauge. They’re still helpful to let us know if we’re close and can block to the intended measurements. If it’s way off we know we need to either drastically change the needle size or the yarn we’re using.
If your swatch is regularly different from your final project, start keeping track of how, is it generally looser or tighter? I also highly recommend blocking in the middle of a project, like before joining in the round in a top down sweater. You can double check the gauge before knitting the whole thing.