Tutorial: Hourglass block without marking

Here is the tutorial to make { hourglass blocks without marking the fabric}. It is very accurate if you tape the washi tape/ masking tape straight and have the sewing machine set in 1/4" for seam allowance. This omit the drawing pencil lines on each square set and the process is quicker. I would recommend reduce sewing speed to half of your normal speed and avoid pulling fabric towards to you. Let the sewing machine take the fabric. It is similar method that I made for { double wedding ring quilt} by using washi tape/ masking tape as sewing guild line on the sewing machine. 

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 Enjoy hourglass blocks making~

Edit: as few of you comment that if the sewing machine doesn't have a extend sewing bed. Please try  tape all the way down the machine to the table top, as {jeifner} suggested! Let me know if that works for your machine.  
xxc