Instructables
hello all,
This is my first instructable.
I am just a hobbyist who interested making circuits and their pcb's in complete DIY manner.i saw lot of articles of home made PCBs.they were quite good except one step.making holes for mounting components.start from laser printing the PCB layout to mounting the components you can carry out in home except the drilling procedure.you shld have a drilling machine with small drill chuck,which is capable of holding 0.5-1.5 drills.
Then i had in my mind,why not DIY PCB Hand drilling machine.
My goal is to built one from junk which is capable of drilling small holes to mount components.

Remember this is not sort of professional drilling machine.with it u can just make holes small enough to mount electronic components over PCB.
Finishing of the drilled holes will depend up on the type of drill you used.(made)

Below is my PCB hand drill and my PCB making setup.

Step 1: Stuff needed

This is what u need to built a PCB Hand drilling machine.

1. 24v DC motor (takes from old dot matrix printer)
2. Nylon pulley (from printer only)
3. Mounting screws 3mm (these are used to mount mother board in CPU cabinet)
4. 3mm hardened screws (2-2.5 Inch in length)
5. 24V supply,some basic tools,Grinding machine with Rough and smooth wheels.
 
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arupbsk3 years ago
I'll also build a such drill.
But is there any wat to attach our normal titanium drillbits into the motor?
ac-dc arupbsk1 year ago
Normal PCB drill bits are a brittle carbide rather than titanium, and are too brittle for hand drilling unless you use an excessively large bit.

If you wish to try using them anyway, use a "dremel tool" (rotary hobby tool) since it is essentially a handheld motor with the chuck and collet needed to align and attach the drill bit to the motor shaft in a non-permanent way.
You'd have to find a very small chuck and figure out some way to attach it.
I've always just used my dremel to do this kind of job, but perhaps a smaller tool would help with precision drilling. Do you find this to be easier than using a dremel or drill press?
glorybe1 year ago
The old fashioned dentist drills that used cords and pulleys operate at very high rpms. Many nail techs use them as they can shape a finger nail quickly. A good used unit costs about $200. US and they are bulky.
tony542 years ago
In the video you are holding the drill at an angle. Drilling at exactly 90 degrees is VERY important. otherwise you are coming out at a different location on the other side and component leads like IC wont fit properly unless the hole is drilled too large. Drillig to large creates other problems.

You need to use a FIXED drill at as high a speed as possible. Commercial drilling machines use 50,000 - 100,000 RPM. Since that isn't something the average person can find or afford, use at least 30,000 RPM with a Dremel and if possible replace its' bearings with BETTER bearings. Use in a Dremel drill press or make your own version but you shouldn't tilt more than 1 degree. You can be more relaxed if you are only drilling large 1/16th inch or larger but smaller bits and parts REQUIRE the accuracy.

Also, you can get CARBIDE PC board drill bits for around $1 - 2 each used. They are much better that new high speed steel but don't tolerate side movement. They will break like glass if much side force is applied.

I used to work designing and manufacture commercial PC boards so I know from what I'm doing.
You are ever so right: the carbide drill bitsmake perfect holes but indeed break like glass if they are just slightly bended. Couple that to the price and making your holes could become very expensive. I herefore now use HSS metal drill bits: a lot cheaper and they allow for a lot of sideways bending. There are a few cons: they holes they make are a bit rougher (but very acceptable) and they wear out sooner. Still I no longer have the frustration of breaking two 2 euro drill bits on a PCB with one or two holes to go on a saturday evening and no stores open on sunday
spawnos37172 years ago
What are you using as a power supply?
coder5122 years ago
I wonder if I get the drill which a Dentist uses to drill a tooth like this one lolzz
images.jpeg
margrove4 years ago
You can go further! See:
http://www.instructables.com/id/PCB-Drill-Press-Using-Salvaged-Door-Hinges/

It works really well.
By the way, I had no trouble with your English. For a first instructable you have done remarkably well. Let's have more!
beehard444 years ago
sorry if i double post but, can i use a needle for this or is it too brittle?
beehard444 years ago
is it just me or do your drill bits dont have any cutting edge?
cool but , throw out the iron the is insulated with abestos
did you mean to say the power cable is insulated with asbestos?
the coil inside is coated with asbestos
you would be wrong anyway. an iron wouldn't be coated with such a dangerous material. Have some common sense.
ABESTOS
spell correctly that is asbestos not abestos
tony545 years ago
Any holes drilled in a PC board should be perfectly vertical (or as close as you can get). When you hold them by hand (I don't recommend it) you can never get it perfect but it might be good enough. Another problem is very small carbide drill bits for PC boards break easily if bent. I recommend a drill press at its fastest speed. Commercial drilling machines run between 40,000 - 100,000 RPM. I Dremel might get you 20,000 to 30,000, which does a good job IF held very still. Their Dremel vice is a better solution but more expensive.
brunoip5 years ago
is that a jdm programmer?
LasVegas7 years ago
For your first instructable... Not bad. I would have liked to see more detail in the steps of construction. Especially the grinding of your bits. Your spellchecker is working okay, but somehow accepted 'u' as a word. It isn't. It's a letter. Also, 'about' has three vowels, not one; There is a 'space' and a capital letter after a 'period'; And, finally, what exactly does "voilah" mean?
zorif (author)  LasVegas7 years ago
yes i do accept.My english is not so good.and it is further spoiled by my SMS language about making drill bits,i will try to get a video.
LasVegas zorif7 years ago
No problem... Surprisingly, your grammer is excellent. Just remember, it's 'you', not 'u'.
Cool comments, but note that it is "grammar" not "grammer" :)
You're right... You caught my typo, smart-ass.
vages your funny
It's vegas not veges. I agree nice instructable but work on the grammar a little. If I'm understanding you correctly english is your second language so if that is the case then I'll give you that. Nice effort and an excellent first instructable.
Anyone interested in "voilah" may find this of some use:
http://wsu.edu/~brians/errors/voila.html
piper12346 years ago
hey wassamara wita writn' "U" ma man? dis addy is kewl ; ) xD haha
microman1717 years ago
That is so AWSOME!!!!!!!! I hate having to use my pin vice to drill my holes (My dremel wont hold the bits and New Zealand sux so I cnt buy smaller collets) If I can get around to it then this it awsome. Now I need a bench grinder.........