not truly by hand and a little sketchy,but i have made them with a skil saw before i got a table variety. i cut 1-1/2 by 15/16 ths thick then laid a 2by 4 flat to support the skil saw ,clamped them together,them clamped the 2 by 4 to a table. drew a line at 3/16ths thick and ripped it.certainly not the best method but it worked many times 4 me.only have enough blade depth to do the job or it will buck.not adviseing any one to try this at home but i am nutty at times. ps this is not a good method,just saying.