FLY-FAST Posted October 31, 2016 Report Share Posted October 31, 2016 Hi All. I am hoping that I can get some advice regarding a measuring conundrum I am facing. I have taken on a woodworking project that requires precise measuring. For example, the measurements that I need to cut is 6 & 7/64 " and 5 & 9/16" and 6 & 57/64'th". I have standard tools including a 6" micrometer. Can anyone give me a push in the right direction here? Quote Link to comment Share on other sites More sharing options...
Popular Post prov163 Posted October 31, 2016 Popular Post Report Share Posted October 31, 2016 Cut just a little bit long then trim to exact measurement on a shooting board. I can't imagine a better way to get the result you're looking for, but some of the other guys may have another technique. 3 Quote Link to comment Share on other sites More sharing options...
Pwalter5110 Posted October 31, 2016 Report Share Posted October 31, 2016 I agree that your only real hope of ensuring that kind of accuracy is with a shooting board. But I have to ask what you're making that requires that kind of accuracy. I honestly feel that the wood will move with humidy changes throughout the year and you will shrink/grow more than 1/64" 2 Quote Link to comment Share on other sites More sharing options...
davewyo Posted October 31, 2016 Report Share Posted October 31, 2016 25 minutes ago, FLY-FAST said: Can anyone give me a push in the right direction here? Try flying slower? Jess kiddin'. I have nothing constructive to say beyond what has been posted, I'm just being a wise ass. Quote Link to comment Share on other sites More sharing options...
krtwood Posted October 31, 2016 Report Share Posted October 31, 2016 Crosscut sled and make test cuts. I added a fine adjustment screw to the stop on my crosscut sled. Easy to dial it in without overshooting trying to actually move the stop around. Another way is to add/subtract shims between the stock and the stop. Quote Link to comment Share on other sites More sharing options...
mat60 Posted October 31, 2016 Report Share Posted October 31, 2016 My sliding table on the table saw had a adjustable stop as does the chop saw. Works for me but I think you have the idea now...Oh..Im 56 and I cant even see 57/64. 1 Quote Link to comment Share on other sites More sharing options...
FLY-FAST Posted October 31, 2016 Author Report Share Posted October 31, 2016 Thank you all. I am building a desktop CNC. It's on instructables: http://www.instructables.com/id/DIY-CNC-Machine-36x22/ Quote Link to comment Share on other sites More sharing options...
bleedinblue Posted October 31, 2016 Report Share Posted October 31, 2016 So my suggestion of a CNC wouldn't be much help then? But seriously...57/64th? Quote Link to comment Share on other sites More sharing options...
Brendon_t Posted October 31, 2016 Report Share Posted October 31, 2016 What medium are you cutting? anything I know of other than mdf is going to move enough to make your cuts plus or minus. even plywood will move 64ths.. Quote Link to comment Share on other sites More sharing options...
FLY-FAST Posted October 31, 2016 Author Report Share Posted October 31, 2016 The medium I am using i's 3/4" mdf. Quote Link to comment Share on other sites More sharing options...
Immortan D Posted October 31, 2016 Report Share Posted October 31, 2016 Yeah, metric to imperial madness, 6 57/64" is 175 mm. Get a metric ruler and the metric version of the plans. 1 Quote Link to comment Share on other sites More sharing options...
Pwk5017 Posted October 31, 2016 Report Share Posted October 31, 2016 Gonna need a 0.3mm mechanical pencil and some good eyes. You need those magnifying glasses you can flip down. With all those measurements, i would prefer to "sneak up" on the cut. Human error with marking the line accurately off a rule/tape can lead to missing the dimension 40-50% of the time. and by "missing", i mean by 1/64". 1/64th is pretty much the width of a 0.5mm mechanical pencil line, which side of the marked line do you cut on? See where i am going? Better to cut it 1/32 long and this breathe on it until it fits perfectly. Quote Link to comment Share on other sites More sharing options...
Popular Post RichardA Posted October 31, 2016 Popular Post Report Share Posted October 31, 2016 15 hours ago, mat60 said: My sliding table on the table saw had a adjustable stop as does the chop saw. Works for me but I think you have the idea now...Oh..Im 56 and I cant even see 57/64. I'm 73 and way past 64ths. 4 Quote Link to comment Share on other sites More sharing options...
wdwerker Posted October 31, 2016 Report Share Posted October 31, 2016 At that level of accuracy I use a magnifying headband and mark with a marking knife or an Xacto . Then you can color the cut with a thin mechanical pencil and you can sneak up on the cut. If you don't have a combonation square with 64ths on it look at . http://www.harryepstein.com/index.php/12-2-pc-combination-square-metric-usa.html Quote Link to comment Share on other sites More sharing options...
Tom Cancelleri Posted October 31, 2016 Report Share Posted October 31, 2016 You might wanna beef up those Y plates on the gantry. Just 3/4 MDF isn't gonna be rigid enough to provide you with any sort of accuracy. Honestly you're better off getting metal plates and some extrusions to build it. Quote Link to comment Share on other sites More sharing options...
mummak Posted November 1, 2016 Report Share Posted November 1, 2016 When I want a more precise cut I mark with a knife rather than a pencil and use the same measuring device throughout the project. I would try a steel rule for less than foot lengths. Your dilemma reminded me of the old machinist maxim, measure with a micrometer, mark with soapstone and cut with an axe. Sent from my MotoE2(4G-LTE) using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
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