I always wondered why the depth gauge on calipers had a step. Now I know, thanks. Although I only have a lathe, I've subscribed to your channel. Most educational.
The old timer that taught me to read a mic said anything past 4 decimals is a c hair. Only took me ten years for it to click. Awesome video, great middle and high school shop material
Awesome video. This video would have been great when I went through machinist school. So,e people had a hard time grasping these basic concepts. You explained them very well. Thanks!
G'day Mark, I'm a manual machinist but your videos are just awesome mate. So much applies to both worlds (CNC and mine) and I can't believe there is so much I didn't quite know, or, embarrassingly was just doing wrong - even after a lifetime of machining. You are an entertaining presenter (dad jokes included) and even watch you G-Code videos, very interesting! I could learn that! Being recently retired after an accident, I'll never use a machine like a HAAS CNC 🤤 but my thought are turning to a home CNC conversion. Anyways, wanted to say thanks so THANKS! Merry Christmas to you and yours mate. Cheers, Michael 🇦🇺 🎅🏼 (PS: I knew everything in this video 😉)
Remember... back in Ireland we got skilled programmer and machinist from India, with mamy years experience. Who came in to the shopfloor? A liar without skills, just a boy, didnt even know what is the pitch in thread, so he was drilling with tap... Doesnt matters What matters is this lovely mechanic slang Mark talks about. That boy repeatly was coming to me asking if i have four emum drill, six emum mill, twelve emum chamfer.. Took me a while to understand that he reads milimeters (mm) as Emum... 4.3 emum drill, drilling ten emum deep
Been going through all these basics and im really happy that most of the basic tip videos arent new knowledge, although i dodnt know the hole center trick with the caliper.
wow, always very usefull!!thank you so much!!! I'd like to add just a detail. to push the callipers performance isn't a bad idea to zero them with a gauge block with a value very close to the entity you need to measure. to bring the zero close to the value of the misure is always a good idea and can avoid lot of methrological complications
You overlooked the Vernier calipers. In many ways they are superior to dials or digitals. I always have a vernier caliper ready as a backup and reference. Both dials and digitals can be wrong at any point in the scale and you won't know, but not verniers.
Sorry Bill, but that is not correct. The digital callipers are more accuracy and precision. A mistrust of modern digital technology has given rise to this rumour. Cheers, Michael 🇦🇺
@@SpatialGuy77 You don't know what you're talking about. All calipers have the same accuracy. Only Vernier calipers never give a false reading. Digitals and dials both can give false readings.
@@billshiff2060 Bill, YOU don't know what YOU are talking about. Go do some research and stop your nonsense mate. Vern & Digi are both very PRECISE, but Digi has a higher resolution and considerably higher ACCURACY. I realise I am wasting my breath with you, you will go to the grave defending your false beliefs. You go on and keep using your vernier, your job tolerances are obviously loose enough that it doesn't matter. I won't even mention a micrometer, no doubt you think vernier rules there too. Truth - in order of increasing accuracy...Vernier OK, Dial Better, Digital Best! All are Precise. Just a commonly known fact champ. Do some research before replying... your apology doesn't have to be a long one.
Did you mean to say oversive the dimensions instead of undersize when talking about having a part anodized or coated? just wondering because wouldn’t the coating make the hole smaller by having a layer or thickness on top of a machined surface. The time in the video mentioning this point is 22:54. I really enjoyed this video, just wanted to verify a point. Thanks
I noticed you didn't align the spindle zeroes of the digital mic's when you zeroed the electronics. Is it not necessary? I've been aligning the spindle zeroes of my digital 1" mic, using the ratchet knob, assuming I would get a better force, and avoid over, or under tightening. Thanks for these Tip vids. Well done, and good info, both as new info, and a review.
When we train our aircraft mechanic apprentices, we use a standard manual vernier. They have to make measurements in inches, convert them to decimals and make them metric. Then they can control themselves by reading out the metric scale. They also have to do the same the other way around? Why do we teach them Flintstone-measuring? Because we can...
Great video, wow metric system is so much more convenient! Straight up round numbers, why do we still do it the same way as 100s or years ago when there is a simpler solution?
Decimal inch is just as convenient for those who are fraction impaired as mm. When it comes to reverse engineering a part, it is generally easier to reverse an inch based part because you'll be fairly safe to assume the larger scale dimensions are based on 1/16ths of an inch. In metric, you cannot assume this and have to wonder whether the dimensions are to the nearest mm or half a mm. Oddball measurements in metric are harder to resolve into the designer's original intention. This gets really bad when inch based drawings are converted to metric, giving 3 decimal place metric measurements implying false precision to a part that was not precision at all.
a pretty impressive vid. i appreciate the time and effort you put into these vids. my feelings are that everyone who ever picks up any sort of tape measure or ruler should watch this vid....
Hey!!! The micrometre at 02:40 was inspected by Johnny B!!! Oh, Johnny B, how hard it is to see, just open your eyes and listen to me. (Old guy machinist teaching Johnny B to read a vernier scale)
Very small small things that i didn't know till date. Amazing !! Can you tell me how one can measure the diameter of groove made for an internal circlip?
9:00 - Yea.. I'm from the US and grew up with the US inch imperial system, I strongly believe the inch system is only good to the point when you need precision measurements up to 1/4" or 1/8" inch... anything lower should be CM or MM. I know you're gunna hate me for saying this... but people who does precision machinists work using inch are bunch of great APEs. I know for a fact that some real pro experienced machinists in the US always have some metric measurement instruments because they do understand the level of stupidly of working down to the "thou" when "millimeter" and "microns" is much more logical and less error prone to work with. Theres absolute no reason to add a bunch of zeros before the inch decimal point and measure by the "thou", it's stupid. If you say it's more of cultural, flavour and history thing based on preference, I also think that logic is stupid since it's irrelevant for thinking and doing advance precision work the most logical way.
In Australia, we don't use the centimeter, it is forbidden. We only use units with a factor of 1000 to prevent confusion, so only microns, millimeters, meters, and kilometers.
That's why you should never let a tape measure slap back into the housing. It elongates the slots and over time makes your tape measure distances wrong.
black oxide can "shrink" bores. i had some parts with a hole tolerance of +0.012mm -0.0mm and they were too small after black oxide. i had to run a reamer though them after coating to bring them back to size and not scrap 400 parts.
thou caliper :D would be nice to have mike that reads that much decimals. Or better yet digimike. Some people read between the lines on a mike that only reads 0.01mm, so they read 0.005 out of it. I dont like that. Same as you cant read 0.5mm off a tape measure.
nice video, i think this "measures up" , but Witworth is another form of fractional inch that america uses, NOT to be confused with the English inch system. and IS different, ever wondered why that 3/8 " spanner doesn't fit an old cars bolts?? , This is why ( its a wit worth threaded fitting!!). but the BEST system is the FRENCH one ( the one the WHOLE WORLD uses) aka the ........ METRIC system (mm, meters, etc.), none of those crappy fractions you have to add or subtract in your head!!!
I would like to thank the community for my machining fitting all other parts around the world and the good lord himself for giving me these skills ,your welcome
I'm so glad I don't use imperial. If you've grown up with it then it's probably fine but metric is so simple as you don't have to use your brain as much which is very important if your being rushed or stressed out.
Mark, I have a real world problem. I could really use your advice. My Z value needs to be above zero (I am almost at the top of the travel). I touched off Z on the tip of feature I am machining and pressed Tool Offset Measure. But in my G code, it’s telling the tool to go to zero. I have already broken 2 tools, and cannot figure out what to do. I tried without a part or a tool, and sure enough it stops at zero when I need it to stop at 2.046”.
fijianatheart thank you so much for replying. I found the culprit. It was a G53 with Z0 in it. I deleted the entire line and it solved the problem. I am actually pretty happy I could eventually debug the program. Thanks again.
Here is a question for my machinist friends in the United States. How many of you are running your CNC machines in Metric Mode? strawpoll.com/z27ps292 You can comment here, or check out the poll that is setup at the link
I too would like to see a thorough video on dial bore gauges from Hass. There are videos on UA-cam about setting up and using bore gauges. It's the way Mark compiles and presents the information, that makes these videos so useful.
U mean beside the fact that metric is the system that science uses internationally? And beside that imperial is defined based on metric standards? Basically we are already using the same system we only have different 'standard measures' As far as it goes for me measuring temperatures could look like this 295 K instead of roughly 22 °C/77 °F. Not even speaking of grams and newtons
@@datpudding5338 1. Imperial system is not standardized metric system... we have UK/US diffrences (1UK gallon is 1.20095US gallon), 1 inch [in] = 3 barleycorns = 25,4 mm 1 foot [ft] = 12 inch = 0,3048 m 1 yard [yd] = 3 stopy = 0,9144 m 1 perch lub rod [rd] = 5,5 yard = 5,0292 m 1 chain [ch] = 4 rod = 20,1168 m 1 furlong [fur] = 10 chain = 660 foot = 201,168 m 1 mile [mi] = 8 fulong = 1609,344 m 1 league = 3 mile = 4828,032 m And 295 K is not 77°F its 71.(3)°F
Nah imperial is better. The only problem with it is the way they do subdivisions is unpolished. If they had just fully embraced the binary system we wouldn't have this thou nonsense
Excellent video, the biggest thing I learned is that the Metric system kicks Imperials ASS! Why is the US system so inconsistent with its measuring standard 5280 ft to a mile versus 1,000 meters to a kilometer 🙆
5,280. And 3 teaspoons to a tablespoon. 4 tablespoons in 1/4 cup. 2 cups in a pint. 2 pints in a quart. 4 quarts in a gallon. And this is why I too love the metric system. "If God had approved of the Metric System, He'd have given us ten fingers" :)
12:29 - "Corner radius" there is so much angles and corners to look at and not sure which corner is concern. Left by tool, I'm assuming it is the CNC mill's cutter tooling. Took me 3 days to finally comprehend what is being discussed here, zero info of details on the subject on the internet / youtube. I can actually see the little radius on the angle...
The US is too stubborn to change to metric system not knowing it will save them a lot money, resources, time, headaches, etc the advantages are numerous.
I wish the internet was around 65 years ago. Everyone should be shown this video. I am still learning now!
No thanks !! 😲
If the interwebs was around then, so would social media...would you really have wanted that curse on society ?... 🙄😅
I always wondered why the depth gauge on calipers had a step. Now I know, thanks. Although I only have a lathe, I've subscribed to your channel. Most educational.
I feel like someone's been watching ThisOldTony
LOL my thought exactly when he showed the hand-measuring tools 🤣
Same with the holster LOL
Ma porco zio usare i millimetri no eh....
Old tony is fun and work. Tq tony
Tq sir
THANK YOU!!!! I've always been confused on how to read the micrometers that my dad has. this has cleared up so much.
Really appreciate you guys sharing this information have a blessed day
Thanks for the excellent lesson for us rusty people!
The old timer that taught me to read a mic said anything past 4 decimals is a c hair. Only took me ten years for it to click. Awesome video, great middle and high school shop material
a c hair is actually way thick enough to screw up any operation nowadays
Jim T and that, sir, is the difference between a strawberry blonde, a brunette and a redhead
@@panjandrum.conundrum not to mention your life! lol
Awesome video. This video would have been great when I went through machinist school. So,e people had a hard time grasping these basic concepts. You explained them very well. Thanks!
Excellent!! Par usual!
I like this guys energy.
G'day Mark, I'm a manual machinist but your videos are just awesome mate. So much applies to both worlds (CNC and mine) and I can't believe there is so much I didn't quite know, or, embarrassingly was just doing wrong - even after a lifetime of machining. You are an entertaining presenter (dad jokes included) and even watch you G-Code videos, very interesting! I could learn that! Being recently retired after an accident, I'll never use a machine like a HAAS CNC 🤤 but my thought are turning to a home CNC conversion.
Anyways, wanted to say thanks so THANKS! Merry Christmas to you and yours mate. Cheers, Michael 🇦🇺 🎅🏼
(PS: I knew everything in this video 😉)
Production value top notch
Nice job. I will be using this in my machine tool classes.
I m a new engineering student in canada and this vdo is just so helpful…..
Good stuff, going to make my guys watch this video.
Remember...
back in Ireland we got skilled programmer and machinist from India, with mamy years experience.
Who came in to the shopfloor? A liar without skills, just a boy, didnt even know what is the pitch in thread, so he was drilling with tap... Doesnt matters
What matters is this lovely mechanic slang Mark talks about.
That boy repeatly was coming to me asking if i have four emum drill, six emum mill, twelve emum chamfer..
Took me a while to understand that he reads milimeters (mm) as Emum...
4.3 emum drill, drilling ten emum deep
Really excellent video. Likely planned, but doing something similar with dial indicators would be awesome.
Been going through all these basics and im really happy that most of the basic tip videos arent new knowledge, although i dodnt know the hole center trick with the caliper.
wow, always very usefull!!thank you so much!!! I'd like to add just a detail. to push the callipers performance isn't a bad idea to zero them with a gauge block with a value very close to the entity you need to measure. to bring the zero close to the value of the misure is always a good idea and can avoid lot of methrological complications
Great video. Please make more videos of these kind.
I probably would not have started watching this guy if I was not an F1 racing fan. Now I like both 😊
Thank you for the most valuable information on measuring instruments.I really like all videos.
You overlooked the Vernier calipers. In many ways they are superior to dials or digitals. I always have a vernier caliper ready as a backup and reference. Both dials and digitals can be wrong at any point in the scale and you won't know, but not verniers.
Sorry Bill, but that is not correct. The digital callipers are more accuracy and precision. A mistrust of modern digital technology has given rise to this rumour. Cheers, Michael 🇦🇺
@@SpatialGuy77 You don't know what you're talking about. All calipers have the same accuracy. Only Vernier calipers never give a false reading. Digitals and dials both can give false readings.
@@billshiff2060 Bill, YOU don't know what YOU are talking about. Go do some research and stop your nonsense mate. Vern & Digi are both very PRECISE, but Digi has a higher resolution and considerably higher ACCURACY.
I realise I am wasting my breath with you, you will go to the grave defending your false beliefs. You go on and keep using your vernier, your job tolerances are obviously loose enough that it doesn't matter. I won't even mention a micrometer, no doubt you think vernier rules there too. Truth - in order of increasing accuracy...Vernier OK, Dial Better, Digital Best! All are Precise. Just a commonly known fact champ. Do some research before replying... your apology doesn't have to be a long one.
Did you mean to say oversive the dimensions instead of undersize when talking about having a part anodized or coated? just wondering because wouldn’t the coating make the hole smaller by having a layer or thickness on top of a machined surface. The time in the video mentioning this point is 22:54. I really enjoyed this video, just wanted to verify a point. Thanks
Fantastic video I understand mostly everything with my limited english thank you very much
Thank You Sir Mark for the Tips..
Great info. For us beginners thanks.
Informative and quite funny as well. Loved watching this !!
Dorky funny, but highly informative and educational.
Glad I found this channel.
😂😂 had to play back a few times on the holster bit 👍👍😎
That was some great content.
Thank you for the tips! Im a machinist student, the tips help out so much!
man, what a class. thank you!
Great video Mark!
I noticed you didn't align the spindle zeroes of the digital mic's when you zeroed the electronics. Is it not necessary?
I've been aligning the spindle zeroes of my digital 1" mic, using the ratchet knob, assuming I would get a better force, and avoid over, or under tightening.
Thanks for these Tip vids. Well done, and good info, both as new info, and a review.
Great video. I might add the combo square and the old school spring calipers are great to have around too. Maybe in a CNC shop they're of less value.
your videos are very well put together! great content and video. Thank you!
Crazy good video, thanks a lot HAAS, thanks a lot dear Mark 😇👏👏👏
'making and measuring.. Measuring..' lol gotta remind us machinists sometimes to make all those little checks. Precision indeed
When we train our aircraft mechanic apprentices, we use a standard manual vernier. They have to make measurements in inches, convert them to decimals and make them metric. Then they can control themselves by reading out the metric scale. They also have to do the same the other way around? Why do we teach them Flintstone-measuring? Because we can...
I subscribed 🙋🏻♀️ i really like and enjoyed your videos
Mike please make a video on repairing and servicing instruments
0:51 -this old tony intensifies-
A few triggers. Lol. Awesome video as usual! It's a scale!
Great video, wow metric system is so much more convenient! Straight up round numbers, why do we still do it the same way as 100s or years ago when there is a simpler solution?
Decimal inch is just as convenient for those who are fraction impaired as mm.
When it comes to reverse engineering a part, it is generally easier to reverse an inch based part because you'll be fairly safe to assume the larger scale dimensions are based on 1/16ths of an inch. In metric, you cannot assume this and have to wonder whether the dimensions are to the nearest mm or half a mm. Oddball measurements in metric are harder to resolve into the designer's original intention. This gets really bad when inch based drawings are converted to metric, giving 3 decimal place metric measurements implying false precision to a part that was not precision at all.
Good explanation and tips.
a pretty impressive vid. i appreciate the time and effort you put into these vids. my feelings are that everyone who ever picks up any sort of tape measure or ruler should watch this vid....
Hey!!! The micrometre at 02:40 was inspected by Johnny B!!! Oh, Johnny B, how hard it is to see, just open your eyes and listen to me.
(Old guy machinist teaching Johnny B to read a vernier scale)
Why am I watching this? I'm not a machinist. Still.....thumbs up.
So well done!
Very small small things that i didn't know till date. Amazing !!
Can you tell me how one can measure the diameter of groove made for an internal circlip?
9:00 - Yea.. I'm from the US and grew up with the US inch imperial system, I strongly believe the inch system is only good to the point when you need precision measurements up to 1/4" or 1/8" inch... anything lower should be CM or MM. I know you're gunna hate me for saying this... but people who does precision machinists work using inch are bunch of great APEs. I know for a fact that some real pro experienced machinists in the US always have some metric measurement instruments because they do understand the level of stupidly of working down to the "thou" when "millimeter" and "microns" is much more logical and less error prone to work with.
Theres absolute no reason to add a bunch of zeros before the inch decimal point and measure by the "thou", it's stupid. If you say it's more of cultural, flavour and history thing based on preference, I also think that logic is stupid since it's irrelevant for thinking and doing advance precision work the most logical way.
Gage R&R is important. Use the correct metrology device based on the tolerance your working towards.
Cant get .003 accuracy with calipers. 🤪
I enjoy these! Thank you!
In Australia, we don't use the centimeter, it is forbidden. We only use units with a factor of 1000 to prevent confusion, so only microns, millimeters, meters, and kilometers.
The Metric system is far superior. NASA use it. Only USA, Liberia and Myanmar use the imperial system of measurement.
NO !!!
I used to mistakenly measure the height with a caliper.
THANKS MARK !
I'm surprised you didn't mention never to store calipers all the way closed. Great video as always fellas.
Such a well made video!
such a great learning video
that’s a great video again
Sorry but I cannot believe you did the Gorilla Grip thing. You are AMAZING !!!!!
That's why you should never let a tape measure slap back into the housing. It elongates the slots and over time makes your tape measure distances wrong.
black oxide can "shrink" bores. i had some parts with a hole tolerance of +0.012mm -0.0mm and they were too small after black oxide. i had to run a reamer though them after coating to bring them back to size and not scrap 400 parts.
Is it because of the heat or the coating?
@@naruteoh123 no idea. I just know that they werde in spec before coating but not after
I need to make a order to Mitutoyo!
It's really great thanks 🙏
thou caliper :D would be nice to have mike that reads that much decimals. Or better yet digimike. Some people read between the lines on a mike that only reads 0.01mm, so they read 0.005 out of it. I dont like that. Same as you cant read 0.5mm off a tape measure.
nice video, i think this "measures up" , but Witworth is another form of fractional inch that america uses, NOT to be confused with the English inch system. and IS different, ever wondered why that 3/8 " spanner doesn't fit an old cars bolts?? , This is why ( its a wit worth threaded fitting!!). but the BEST system is the FRENCH one ( the one the WHOLE WORLD uses) aka the ........ METRIC system (mm, meters, etc.), none of those crappy fractions you have to add or subtract in your head!!!
Awesome 👏
It's good to distinguish that a "tenth" is a tenth of a thousands - not a tenth of an inch.
Can you set those IP remote controlled camera robots at your factory so that people can have some live interaction with HAAS Automation. Thanks!
I would like to thank the community for my machining fitting all other parts around the world and the good lord himself for giving me these skills ,your welcome
I'm so glad I don't use imperial. If you've grown up with it then it's probably fine but metric is so simple as you don't have to use your brain as much which is very important if your being rushed or stressed out.
Mark, I have a real world problem. I could really use your advice. My Z value needs to be above zero (I am almost at the top of the travel). I touched off Z on the tip of feature I am machining and pressed Tool Offset Measure. But in my G code, it’s telling the tool to go to zero. I have already broken 2 tools, and cannot figure out what to do. I tried without a part or a tool, and sure enough it stops at zero when I need it to stop at 2.046”.
Bill do you have a G43 on the line with your H and Z?
fijianatheart thank you so much for replying. I found the culprit. It was a G53 with Z0 in it. I deleted the entire line and it solved the problem. I am actually pretty happy I could eventually debug the program. Thanks again.
OK so I need a holster now
Here is a question for my machinist friends in the United States. How many of you are running your CNC machines in Metric Mode?
strawpoll.com/z27ps292
You can comment here, or check out the poll that is setup at the link
Mark can come open my toolbox anytime.
can you go through bore gauge a bit thorough?
I too would like to see a thorough video on dial bore gauges from Hass. There are videos on UA-cam about setting up and using bore gauges. It's the way Mark compiles and presents the information, that makes these videos so useful.
You're suppose to get the correct spacers for the distance being measured. Then zero it with a micrometer with the corresponding measurements.
Hi, 6:26: "NO WALK-IN's"? What does it means?
It just means that a person must have an appointment.
World would be a nicer place if everyone used only one of the systems. By that I mean metric
U mean beside the fact that metric is the system that science uses internationally?
And beside that imperial is defined based on metric standards?
Basically we are already using the same system we only have different 'standard measures'
As far as it goes for me measuring temperatures could look like this
295 K instead of roughly 22 °C/77 °F.
Not even speaking of grams and newtons
@@datpudding5338 1. Imperial system is not standardized metric system... we have UK/US diffrences (1UK gallon is 1.20095US gallon),
1 inch [in] = 3 barleycorns = 25,4 mm
1 foot [ft] = 12 inch = 0,3048 m
1 yard [yd] = 3 stopy = 0,9144 m
1 perch lub rod [rd] = 5,5 yard = 5,0292 m
1 chain [ch] = 4 rod = 20,1168 m
1 furlong [fur] = 10 chain = 660 foot = 201,168 m
1 mile [mi] = 8 fulong = 1609,344 m
1 league = 3 mile = 4828,032 m
And 295 K is not 77°F its 71.(3)°F
Good example of ClickBait, but I'll take the bait: The part tolerance matters, not the measurement system you used to create it. Cheers, Michael 🇦🇺
Nah imperial is better. The only problem with it is the way they do subdivisions is unpolished. If they had just fully embraced the binary system we wouldn't have this thou nonsense
Excellent video, the biggest thing I learned is that the Metric system kicks Imperials ASS!
Why is the US system so inconsistent with its measuring standard 5280 ft to a mile versus 1,000 meters to a kilometer 🙆
5,280. And 3 teaspoons to a tablespoon. 4 tablespoons in 1/4 cup. 2 cups in a pint. 2 pints in a quart. 4 quarts in a gallon. And this is why I too love the metric system. "If God had approved of the Metric System, He'd have given us ten fingers" :)
Top notch!
Is there a way to cut all programs at once to a USB stick?
Am I the only one who started the video and was immediately curious what the trash bags were for?
Micrometer in metric: 3 seconds explanation.
Micrometer in Imperial: 3 minutes explanation.
🤣
Hello, I'm from Poland. I like CNC maching. Please a polish subtitles.
12:29 - "Corner radius" there is so much angles and corners to look at and not sure which corner is concern. Left by tool, I'm assuming it is the CNC mill's cutter tooling. Took me 3 days to finally comprehend what is being discussed here, zero info of details on the subject on the internet / youtube. I can actually see the little radius on the angle...
Gorilla Grip almost stops my heart!!
I loved the caliper in the holster ... LoL
GrEAT ! video.
The US is too stubborn to change to metric system not knowing it will save them a lot money, resources, time, headaches, etc the advantages are numerous.
Thank you very much sir
i like conventional vernier caliper
한글 자막을 지원 해줘서 감사합니다. ^^
Q lastima q no los traducen mas :'(
This isn't a Tip of the Day it's a tip of a career.
woooov 🥇🥇
Thanks for made korea subtitle
Can you make another video where we skip the hand measuring tools and output data from the wirless probing system 😁?
Here are a couple for you: ua-cam.com/video/g7hl2Lw4KdM/v-deo.html, and ua-cam.com/video/fFZi6rWIcuU/v-deo.html
They look great in a holster.🤣
Mega (M) super description educational tip :) thanks a lot.