HOW TO ACCURATELY MARK OUT HARD TO MEASURE BOLT PATTERNS
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- Опубликовано: 9 июн 2018
- Here's a little trick to help you take accurate measurements from hard to measure bolt patterns. I use this when making custom engine mounts or brackets etc that need to bolt to an existing bolt pattern.
My names Matt Urch and I own and run Urchfab welding and fabrication.
I specialise in custom automotive fabrication from building roll cages to complete one off builds.
I built the worlds most unique and oldest drift car known as the drift rod which can be found on my channel.
So if your into grinding, welding, fabricating, drifting, going fast etc, your in the right place! 
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Wish I'd know that tip a long time ago, so glad I've found your channel as your tips are making my vehicle repairs and modifications so much easier and neater. Keep em coming 👍
Your tip is great, been used in the Aircraft sheet metal industry for years ,that's where I learned the trick .Good to see old skills are being passed on mate !
Cannot believe that I have been doing it all wrong for so many years. Thanks for the tip.
No problem, Cheers
Holy shit, this makes way more sense! I always tried poking holes in paper from the outside, and into bolt holes. This is so simple.
I’m so glad you do it that way. I’m terrible when it comes to marking holes accurately. But the spike stud is definitely the way to go.
you just solved half of my life problems with this video. And it's such a simple solution that I'm just banging my head now, why did I not think of that earlier?
thanks man, useful tip that I will frequently benefit from.
Thanks Matt! Exactly what I need to make the engine mount plates for my Zetec going into a kit car, also the flange for the water rail I'm making.
That is sweet, I've messed up more than I care to remember
On bolt patterns in the past and this will really help me, thanks a bunch.👍
Awesome tip Matt.
I had been using the dirt on face and press the cardboard around the holes method but was always filing holes a little to fine tune.
The centre point from the bolts far more accurate.
Do this kind of work daily and have watched many fab videos. This one is a true gem!
Cheers
I love getting notifications of your new vids Matt, as always, a fantastic one that is always useful.
That's great to hear, Cheers
You can buy screw punches , although your method works fine and is cheaper. Another good video.
Great tip for bolt patterns, simple and very effect,
“Like a glove” a nice nod to uncle Trev, lol 👍
Fits like a glove...again great video thanks
Great fab tips as always, i already use this one but usually go straight to metal
Awesome....this tip and technique is valuable. Thank you.
Love your warts and all style. Combined with the tactical speed ups its simple and clear. Very real. Thanks for sharing.
It may seem obvious to some, but you can stumble through life not knowing stuff. It does not mean you are stupid, it means you are human... and of course... you can forget shit when you are tired.
Keeping your head open to knew ideas when you are flat out trying to get through the day, is a VERY difficult thing to do, no mater how experienced you are. Keep up the good work.
That's the best point I ever seen especially with a grinder.
Another Gem of a lesson. Thanks Bro!
love these little videos matt :) one day i WILL have another garage n i will use ALL these tips lol keep em comin !!!
Bloody hell, most great ideas are really simple solutions to tricky tasks, this one is great.
You're crushing it with your content. Love watching your tricks. One that I use is keeping a roll of drawer liner, the really cheap stuff that's basically just white stick on paper in the garage. You can buy a roll for one or two dollars and stick it right on to whatever you're trying to trace. You can even cut the drawer liner into 8.5x11" sheets and run it through an inkjet printer if you have a design on computer you want to transfer to metal. Thanks for all the videos!
Awesome, Il look for some of that. Cheers
Awesome tip! Will come in handy for me very soon! Thanks for the post
Cheers
Great tip 👍🏻 Found it interesting too 😊
Great helpful video man, thanks!
deff handy to have those especially if you need holes for same thread bolts a lot.. another way to very quickly transfer bolt patters is to use intersecting archs.. you can use a measure but is most accurate using a compass or dividers.. using a compass set the pin point on the edge of one bolt hole then set the pencil tip on the same edge of a diff hole.. then draw a circle or at least an arch on your template... measure again to another hole forming a triangle pattern.. repeat for each hole .. when done your exact bolt holes will be at the intersection of your archs.. granted you wont have reusable tools when done but is way faster when doing one off stuff than making tools for the job.. hope this helps .. cheers :)
shut up
Im not sure how that works. I tried it on paper and I couldn't transfer 3 holes onto the next page. The problem is, at least the way I understand this instruction, that you only have the original holes edge. So you draw an arc. Now you're in a situation that on the paper you have one place that represent the spot (edge) from which you took the first measurement and an arc. You now don't know where to draw the second measurement from. I must be misunderstanding the instruction but I re-read it many times and tried different approaches and always end up with the same issue.
@@jackskalski3699 3 or more holes can be seen as one or more triangles.. using calipers or dividers or a compass, measure each hole distance from each other. Do this on the hole edge not the middle of the hole, and must be the same edge of the holes. |O |O the distance between the same edge of the hole is the same as their centers. Then draw transfer the values to your pattern the same as if u were transferring a triangle .. the points of the triangle will be your hole centeres.. only after you map your hole patern, you can then cut the shape for the outside edges.. Hope this helps..
I just grabbed another link from a quick search .. I have no affiliation, but he does a good enough example to show the concepts of intersecting archs.. since not actually drawing a triangle no ruler needed
ruclips.net/video/LlEKIXE6QKY/видео.html
@@VorpalForceField I see! Thanks for responding. I misunderstood the technique then :) it makes sense now!
Several different methods, this is a good one.
This is widely used in the Sign industry to mount letters or sign panels with hidden mounts. Good tip.
Pretty neat trick and demonstration. Liked and subbed.
This truck worked perfectly. Thanks
Thanks for this great tip, definitely going to need to do this one day, 👍👍
Ive tried the paint method and so many others but this is definitely the way to go, i gotta start making a bunch of studs lol
Nice and thank you saves alot of time.
This crossed my mind mounting a new front fender, didnt come up with an effective way to execute it though. Appreciate this!
Cheers
Thanks for sharing such a clever and useful tip. Joel....
No problem, Cheers
Still come back to this video as inspiration years later
Awesome trick! 👍
Fantastic.. I need several 10mm holes in a 7mm plate to fit a swivel seat in my van, been dreading drilling the plate wrong, having seen your video I am looking forward to cutting some 10mm bolt heads and turning them to a point first thing in the morning.
Thanks for the trick !!!
Nice clean shop.
👍👍🇨🇦 I like the part using the drill and the grinder at the same time definitely going to try that thank you.
Lovely bird singing in the background
What a boss idea. I like. Such a cool move. Thanks.
Cheers
Clever! Very nice. Thanks for sharing.
Cheers
Genius! Thanks bro! Great idea!
Thanks Mate. thats a great trick
Very nice. Thanks for sharing.
Love this channel! keep it up Urchfab !
Will do, Cheers
And people do it even with gearbox adaptor plates, tracing bolt patterns on both the gear box and engine from each side, while keeping the clutch perfectly aligned with the drive shaft!
i use allen head grub screws and small pieces of an old allen key hex sharpened to a point so you can run them in right flush but easily remove them
That's clever too, there times you don't want the bolts sticking out but you are afraid of winding them down too far that you can't get them out.
another way is get a piece of clear acrylic and use sharpie to mark the holes, then just transfer that to your piece .
or use a pencil or just get anything around the holes to dirty them up, then grab a piece of cardboard and press it over, the dirt or pencil mark will transfer to the sheet.
Nah, not accurate enough. People who try eye balling the middle with a sharpie are the ones coming to this video for a better tip. Also acrylic is damn expensive to be fucking around for templates. This trick with the bolts and hitting the piece with a hammer is my favorite and less time consuming. I fit all racing seats with this method. Put 4 sharp bolts, ask the guy to sit down, make sure he is centered with steering wheel, pedals, middle of windscreen, ask if he is happy, then hammer his skull through the sunroof which will give you the punch holes at the bottom to start drilling....
Yeah that is another way but his way is cheaper and seems more accurate
Great tip thank you for taking the trouble to make the video!!
That was damned good, I don’t know how it happened but this video came up at the best of times, I liked and subscribed before I saw it, and at the end of the video, I had my solution, thanks man!!!!
What a simple and effective idea.
Thanks
Great video!!
That is a very good idea. Beets the heck out of trying to match the holes any other way. Thanks for sharing
Wonderful! Thanks for sharing
No problem, Cheers
Very useful, thank you.
Great trick thanks
Great tip,thanks
Another great video... Keep up the great job... As always, thanks for posting and helping us out.
No problem, Cheers
Great tip
McMasrer and Carr sell sets of these pins but DIY is much more satisfying
Cheers
Hi, look up "transfer screws". You can buy sets of them although sometimes it is easier/faster to just make them, especially for one off projects.
I prefer to using LIDAR to scan the bolt pattern, then create a vector and cut it out on a CNC.
Haha...…….. only joking, in my dreams!!!!!!!!!!!!!!!!
Nice tip ;-)
Great tip thanks.
This is a good demonstration. Each one of those 'faces' is a bolt boss. 3:45 in this case you are describing a recessed boss.
Thanks for the video =)
Darn good idea, thanks
brilliant tip, nice one :)
Rub a marker around each hole or some dirt even. Take paper rub the holes. Transfers over and viola. 100 times quicker. Done it for gaskets etc. Works great. This is also a decent tip
Cool tip! Thanks
Bad ass.great trick thanks
No problem, Cheers
Nice work
Cheers
I have done this for a couple decades .. I have a set of studs over time.
Nice one mate!
Cheers
Perfect. Great tip.
Cheers
Good job thank you very good idea
Cheers
amazing!
Different height, roger that, nice videos, keep it up👍
Will do, Cheers
Neat. Thanks!
wow man. thank you for this.
No problem, Cheers
I use vernier calipers to measure the distance of the bolts that are screwed in the holes. If measuere outside, then subtract the diameter to get the distance between the centers. Best is to start with the longest distance of 2 bolts. Transfer this to your template with a ruler. Then measure the distance of the third bolt from the first bolt an draw an arc with this distance in your template around first center. Measure the distance from the second to the third hole and also draw an arc in the template around 2nd point. Where the arcs cross you have hole number 3. Repete the steps, but best ist to use always the same starting holes to stay accurate. To be very accurate, draw it in a CAD program, and 3D print a drilling template.
This was a amazing I have a machining project at campus and this helped out a bunch I can't begin to explain. Lol I really never thought it could be this easy😂
Huge thanks to the creator!
Great tip, thanks :-)
Cool. I use clear plastic sheet instead of cardboard so you can see the holes.
Great, but say one is making an adaptor for unmatched housings that have shafts in them, where the intent is to couple the shafts? Do you have any hints for finding where the shafts are to accurately position up the two sets of holes relative to each other please?
"like a glove" lolol classic!
Awesome
genius! This is awesome! I have been using paper with lead pencil to cardboard to plate steel. This is soooo much better! Thanks for sharing!!
No problem,Cheers
great tip thanks. See you have the rtech 50 plasma cutter , do you not find shorting the cutting shroud on the workpiece causes it to spark? I've often wanted to use my one like that as a drag tip cutter but seems to arc and wasn't sure if it can cause damage. Could you do a vid on plasma cutting techniques etc? when you'd use plasma versus angle grinder or cut off disc Cheers
Mines probably 4 to 5 years old now and ive been doing that since new, you go through tips quicker but thats about it. I will do a video on some plasma cutting. Cheers
Great tip thanks
Cheers
Perfect
Personally I'd use a lathe to taper the screws... buts dat 'cos I have 3 of 'em in the workshop...
😂😂😂😂😎
cone-point grub screws are available off the shelf too... 😒
This is a great example of the "KISS" principle... well done man 👌
3 lathes, thats what dreams are made of! I've just moved out to the sticks on my own so my tools are a bit limited at the moment. A lathe is high on the list though.
If had only known they were called "Cone Point Grub Screws" I would have bought a bunch years ago. Maybe I got lucky but I made some quite easily after watching this video.
camgere ... well thats what we always called 'em here in Ireland & in my youth I worked as a counter hand in a supply company selling Umbrako socket screws so I managed to remember the name (40 years ago !! ) 😎😎
Urchfab.... I also have an old Van Norman milling machine & a small hobby mill for little bits.... the machines were left over from my small engineering biz years back & I couldnt part with them... particularly as their monetary value was less than their usefullness... I still do a little, mainly repairing agri-equipment for the local farmers...
I wasn't tryin to brag..🙄🙄🙄
(well. maybe a little bit 😅)
Great to see a guy interested in working with his hands & willing to learn new stuff, its a dying trait in "modern man" shame really... 😔
Keep up the good work & keep the vid-tips coming... 👌👍
So one for each hole?
But there's four holes.... exactly.
Nyah nyah nyah to you to.
ruclips.net/video/8cSkX7X8a3o/видео.html
Nice escort at the backround
What rwd gearbox did you use with your saab turbo engine?
They also sell such pins. They are usually called "transfer pins" or something like that.
For what it's worth, bolt holes as such will quite often be put on centers that fall on even measurements, (by design). So you can measure the distances with some confidence that the center of one hole will be an exact number of millimeters from another.
Yes I would have thought so too. A tradesman would be taught to measure the holes and and then mark out his steel. This method, once the pins are created, is quick for the purpose and I have seen similar ideas used in industrial settings. Nobody would waste time on actually measuring hole distances as it is technically taught in a trade. We would normally look for a cheat just like this because it saves so much time.
These bolt holes form a rectangle, with the top long side evenly divided. (Or appear that way in the video). That's how I visualized it. On the right hand side the top and bottom corner line up. On the left, the bottom corner was slid over to the right to fall in the middle of the two holes above. So in this case looks like all that need be done is drill holes in the corners of, and at evenly spaced points along an edge of a given size rectangle. It looked like this one was pretty easy.
Adam Booth and Lyle Petersen both endorse their set of transfer pins highly. The commercially available ones are hardened and have a very fine point, and typically come in a set with various threads. If used carefully they are accurate enough to mate threaded holes, not just through-holes. Real useful.
Engineers typically do not put holes in random places, but rather those holes will be in places that can be typically defined by rectangles, triangles, circles or combinations thereof. Distances will typically fall on an even millimeter, or fractional inch. If you can visualize the pattern you can duplicate it. But without measurements, it might take a couple of tries.
And, The title of this video does say... "HARD TO MEASURE" bolt patterns...
Great tip. Thanks!
thanks for the great tips ,keep em coming 👍
Cheers
I just drill a hole in cardboard attach with one bolt and tape then ball pin an impression of the other holes. You idea does seem very accurate though.
That's awesome man you know how many years I fought these for 30 years trying to build stuff like this and never even thought of that. Any idea when you got a plate that doesn't have a threaded hole on it? Like trying to get two plates to match up or build an identical plate like the one that's Factory on something that the bolt slide through?
Cheers, If I was making identical plates i would weld them together on the outside edge and drill through them all at once with one set of markings on the top plate, then grind the welds off. Is that what you mean?
@MichaelKingsfordGray LoL...only obvious to people whom stop for 2mins & actually think about what they r doing. 🤔
@@Urchfab no what I mean is if you have a plate that's a part of some thing and you chant weld another one to it how do you make them fit?