transform a surface gauge into a squareness comparator
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- เผยแพร่เมื่อ 6 ก.ค. 2024
- transform a surface gauge into a squareness comparator
I this video I will demonstrate Checking a block to see if it is square
A squareness comparator is an essential tool in any machine shop.
squareness check
surface gauge
dial test indicator
inspection of perpendicularity
ray gallant
where have you been all my life? this is fantastic.
Love your honesty...'useless tools'! And then how the tool can be made useful. Thanks!
thank you
ray
I have seen others use squareness comparators, like Steven Lang (Shark River Machine) but just haven't gotten to making one up. I like the idea of a 3D printed setup like you show, but that will have to wait a few months for the shop budget to allow for a printer, lol!
Another excellent presentation, Thank you.
Thank you for taking the time to comment much appreciated
Ray
This is exactly what we do at my work, every time we need to square up a precise block. We block every single part before machining, so that's pretty often. The only thing I don't believe you mentioned is that what you measure is only the precise measurement on a square block. A 6x6" block measuring .002 out is not the same as a 3x12" block. I'll take a look now at your other videos to see how you address fixing it now.
Excellent video about how to check for squareness. Looking forward to the gen 2 squareness comparator tool video!
its coming soon 8 week or sooner
Also can't wait for the Gen 2 indicator. That thing looks awesome!
@@danielmatthews8475
its coming soon just swamped with the indexing head simulator
this Friday is the second video of the meg base :-)
Ray
Awesome video
Good information for a new apprentice
Glad you liked it
Looking forward to seeing that other comparator.
it works like a dream
I have made 8 different prototypes
over the past year
I will be posting the stl files so every one can print
the current model cost me $9.42 CAN to get printer
trying to come up with a version that does not require machining and a total cost under $20
Ray
Fantastic!
thank you
Ray
Thank you i learned something new today
thank you
I love positive feedback
Ray
OK.....so all I need is a plain round bar...... a piece of 10mm round HSS will do....... in the front of my scribing block and I have an instant squareness comparator......that beats having a curved surface and it's readily available.............sometimes the simplest works best......and a piece of round bar faced flat on one end makes a good and true cylindrical square that is just as good as the most accurate square you can get and is easy to make........splitting hairs is not on my to do list.
Great video!
Thank you and thank you for taking the time to comment much appreciated
Ray
I just posted a new squareness comparator video
th-cam.com/video/NFdFiKYY9TQ/w-d-xo.html
This is a 3-D printed squares comparator
A common way is to flip the part over so the top is now on the surface plate and then check the same side again. This will also show double the error, it negates any taper between the oposite measured sides if they are not parallel.
That’s a good point
Very nice. Once you have achieved flat you can achieve square without assuming parallel.
@@robertfontaine3650 Is this possible without a reference square.
@@machinists-shortcuts You can measure squareness without a reference square but to do so requires 2 flat, parallel planes between the measured plane and a reference surface. The top and bottom faces touching the surface plate MUST be parallel. So you can measure squareness without a reference square by flipping the piece top for bottom .
@@robertfontaine3650 Ok? I'm confused, your earlier post suggested that you don't need parallel faces.
Great video. Personally would use a better stand but thats just me. Well done
Fair enough!
Are you still planning on showing the upgraded version? I'm super interested. Well done video.
Yes it’s in the editing stages I have the new version ready to go it’s been tested printed and it’s awesome
Coming soon
Thank you so much for your patience much appreciate it and thank you for commenting
Ray
I just posted a new video and I posted the
STL files so that you can make one yourself
If you like this video share it with your friends
th-cam.com/video/NFdFiKYY9TQ/w-d-xo.html
How is sixteen and one-half divided by two equal to eight and one-half?
When measuring a front and a back side, you are assuming those sides are parallel to each other. This is a vital prerequisite. Same for dividing the difference in two. Only when you know the sides are parallel.
You shouldn’t assume that the sides are parallel
You have to check you cannot have squareness without parallelism
I am in the process of scraping in a master square and want to build a surface guage next. Did you post the improved gauge video with the 3d parts?
I am still working on it
coming soon :-)
On your first method. That only works if the block is parallel doesnt it?
You cannot check squareness on any block if it is not parallel first
You are correct the block must be parallel before checking for squareness
Ray
@@shopandmath Method #1 is not quite correct. Measuring 180 degree opposite sides can provide an accurate squareness reading only if the two sides are exactly parallel! Imagine if both sides sloped exactly the same - for example - each side sloped exactly 5 degrees where each side was wide at top and narrow at bottom. When you rotate 180 degrees the indicator readings would be the same for the sloping (and out of square) sides.
you are correct before checking squareness we must check parallelism
I will be editing the video the add this in (one or 2 weeks)
thank you for commenting
Ray
@@shopandmath then how would you check a triangle?
Half of 16.5 is not 8.5. Method is only good if accurate width and parallel measurement is made first, right?
in a week or so will fix the mistakes and re post and will include parallel check first :-)
@@shopandmath sorry if I sounded critical. I enjoyed your video. I am bad at math and that part in your channel title is enough to scare me away 😋. That I caught you in a math error made me chuckle.
When I went to school 16 1/2 or 16.5 ÷2 was 8 1/4 or 8.25 not 8,5
Just grind a flat on a 3/4 inch bearing ball, put it in the front fee and you can swing an arc, the fact that you do not have Starrett or Brown & Sharpe surface gages says something as telling as you think they are useless.
Hi Dennis
I love high end tools but I would rather spend the extra money to upgrade a micrometer or low end gauge blocks (depending on your trade)
in my opinion a surface gauge is not worth the investment
over the next couple of weeks-months I will be posting plans and stl files for the best squareness comparator it is 3D printed .
It will outperform the $1500 one we have in the shop and cost less than $20
to make
Ray