surface finish symbols explained

[@andrewandres148]

Good presentation, good refresh for where i'll need it....

[@shopandmath]

thank you for your nice comment. And thank you for taking time to comment. It is much appreciated. Have a great day. Ray

[@AdityaTheDevotee1202]

wonderful explaination, you deserve appreciation😁

[@shopandmath]

Thank you for the positive comment. It is much appreciated and thank you for taking the time to comment. Ray

[@UdayKumar-uh4gm]

your explanation is crystal clear ...thank you sir for uploading

[@shopandmath]

Thank you for your nice comment and thank you for taking the time to comment it as much appreciated

[@rengarajug3537]

Very nice & helping the regular engineering activities

[@josha9620]

Great video Ray excellent explanation!! Everyone in an apprenticeship should watch this video👍👍

[@mkegadgets4380]

I wish you were around when I was an apprentice, it would’ve been a whole lot easier. Thanks for taking the time to explain, with great detail.

[@shopandmath]

thank you for your kind comment Ray

[@James-fs4rn]

👍 very informative. Thanks

[@nunyabiznuss9869]

Thanks for the video 🙌🏻

[@shopandmath]

Thanks for the nice comment and thank you for taking time to comment. It is much appreciated.

[@akosrupp232]

good video

[@raysfix]

Thank you for the nice comment and thank you for taking the time to comment much appreciated Ray

[@Reverse.S3]

Great video!

[@raysfix]

Thank you for watching and also thank you for taking the time to comment I much appreciate it Ray

[@roland8449]

Great video. Thank you.

[@gaboscorporation]

amazing vid mate, really useful for someone studying engineering, thx.

[@raysfix]

I’m glad that you enjoyed the video And thank you for taking the time to comment Ray

[@tonygombas491]

Thank you great video

[@shopandmath]

thank you Ray

[@shouldb.studying4670]

This video should be compulsory viewing for any materials scientist. ❤❤❤

[@raysfix]

Thank you for such a nice compliment and thank you for taking the time to comment I made this video for my level three apprentices it basically contains everything that they will need to write their C of Q or red seal ministry test Thank you again Ray

[@payno6643]

Great video. I just scored a surftest 210. Im checking finish on everything. Im curious about the standard. It says 117. Im picturing a 125 finish, which is rough. What id consider a saw cut finish. This standard looks alot better than that. So what do i have wrong?

[@raysfix]

These pieces of equipment are extremely sensitive and can go out of calibration easy If you know someone who has the same unit as you do a side-by-side comparison using the same test piece should give you the same results If you have access to another master sample try using that to calibrate the unit Ray

[@aaronm4523]

So I have perpendicular symbol with a .02 after the symbol. are they call the machine marks to be perpendicular with in .02 of the surface?

[@shopandmath]

I need to see an image

[@johnm840]

That is helpful to me. what are your thoughts on measuring Lapped surface. More of a flatness spec vs roughness I think. I just run an indicator across the part on a granite stone to check, sampling edges and middle and fishing around. Surface finish is in the weeds for this I think when indicator is less than 1/10 of a thou or better Probably a dumb question, had not thought about it.

[@shopandmath]

if its for flatness ? CMM with a contactless prob or try using Optical Flats (most high end inspection labs have them) you could call your local university and ask if they have a Lasermike It uses a helium-neon laser beam to scan the surfaces

[@johnm840]

@@shopandmath Optical flats are great. you see so much once you learn to read them. Small deviations not something I need to do, but an interesting topic. Tom Lipton videos has me thinking beyond just 1/2 thou range. +/- .005 my typical range and I use those finish samples for reference at times. Thanks for the videos and topics you cover.

[@tj9382]

Very helpful, thanks.

[@shopandmath]

thank you for the nice comment Ray

[@danishmir6107]

Do you know where i can buy these Surface roughness metal plates ?

[@shopandmath]

at any machine shop supply amazon has them I got mine for almost nothing (used from buying old tools)

[@andrewchamberlin1358]

Sampling length on my SJ-210 shows in terms of Lambda C .1 and the travel distance is nearly .500" Shouldn't it be Lambda C .5?

[@akashanand1329]

thanks sooo much .

[@raysfix]

Thank you for taking the time to comment it’s much appreciated Thank you Ray

[@godwincornelius201]

Thanks

[@adamsblanchard836]

🤒