What Does a Changed Needle Size Do to Your Gauge in Knitting?
There you are knitting a gauge swatch exactly says you must you do not understand what it is telling you. Your swatch has a gauge of 6 1/4 stitches per inch although if the pattern needs a gauge of 5 stitches per inch. Fewer stitches per a needle size are required by Inch. So if you used a dimension you need 5 stitches per inch and 4 needles to your 6 1/4 stitch swatch change a few up needle sizes to 6. See what happens when you snore with that size. Your swatch has 6 1/4 stitches per inch and if your pattern needs a gauge of 7 stitches per inch. More stitches per inch require a smaller needle size. If you want 7 Tiles Per inch rather than the 6 1/4 stitches your swatch has try knitting with a needle a size or two smaller. See if this gets you gauge.
Two other factors besides needle size can affect your own judge. Your frame of mind while knitting is one factor. You will knit than if you are relaxed or under the effect of a glass of wine to get you if you are tense. The other factor is the material that your needles are made from. How many yarns slide along metal needles can provide you estimate that is great but yarns will be slippery, your stitches may pop the needle off in a way. You may knit closely to compensate but it does not eliminate the issue and might lead to hand cramps. Switch from metal to Plastic or Wooden needles and see if the knitting gets estimate and goes easier. Or if your yarn grabs your needles and would not slide for knitting, switch from plastic or wooden.
Knit and yarn designer Cheryl Oberle includes a gauge swatch trick to let you know what size needle you want magic. Cast on 30 stitches, knit your swatch and measure across the swatch. Going up or down one size will make the swatch larger or smaller if will not get gauge with your yarn. If you knit your swatch in stockinette, ribbing, cables or it does not matter. Find whatever needle gets the indicator your pattern requires. If your gauge in knitting the swatch is off a smidgeon and you call it is ready for an unpleasant surprise when you try cast on knitting in your sweater that is finished. One stitch makes a difference that is radical. A half, quarter or third stitch Inch too little or too much will influence the sweater fits.