wykropkowana
Temat: drilling the pcb
... I still drill a majority of my holes this way (does not make sense to program/align the CNC for a prototype, when you can just hand drill it with the Dremel press in about 10 minutes). A couple of tips for using the Dremel press: Use some thin cardboard, a sheet of paper, etc. in between the board and the flat part of the press, it has a brushed finish that makes sliding the board around difficult without something in there. When using the router bits you can actually let the pad guide the bit into position if you lower the speed to around 7 or 8 thousand rpm. You get less clean holes per bit this way but better accuracy on the holes. It's something I can't really explain but you will see what I mean when you try it. Just don't hold the board super tight so it can move to center up the hole. Turn the depth guage on the press so it takes up the slop in the press. Again you will see what I mean...
Źródło: midibox.org/forums/index.php?showtopic=743
Temat: Diamond Bit Christmas Gifts
Smash, Thanks! Wasn't even aware router bits got that small (must be machinist stuff). I already hooked up with a whole box of .033" (#66?) carbides from a place that someone in the PCB Yahoo group turned me on to. He's at http://toolsandtunes.com/ and also is known to have weekly eBay auctions which end early on Monday mornings. If anyone in the US needs some, he's nice as crap and I had them in a couple days. They're the really solid industrial ones with the beefed up shanks, label...
Źródło: midibox.org/forums/index.php?showtopic=5413
Temat: drilling the pcb
You can find Drill Bit City's complete line at http://store.yahoo.com/drillcity/. After working with almost every carbide bit on the market, I use 1/32" (.0312") chipbreaker router bits instead of the standard carbide PCB drill bits. They are as good or better at drilling the holes than the good carbide bits, but won't break nearly as easily with sideways force or improper use. They are the perfect size for most component holes, and the larger holes can be made easily by moving the bit around the inside of the hole. Remember that you simply can't do this with a standard carbide PCB drill bit, it will break the first time. I have...
Źródło: midibox.org/forums/index.php?showtopic=743
Temat: drilling the pcb
Thanks for the info on the carbide router bits, I've been rapidly dulling hss bits for the last 5 boards I've made (and breaking them, too). I'll have to try those out. Thanks!
Źródło: midibox.org/forums/index.php?showtopic=743
Temat: Clean Fader Slots
has anyone here tried using a router. A router is normaly used for wood but if you are only using aluminium a few router bits should get you a stack of fader slots. plus if you get one with a small bevel on it you can have a beautifull finnish esp for the edge of the button holes and lcd hole. if you set up a nice jig (a few clamps with a few bit of wood) you should end up with avery professional looking board.
Źródło: midibox.org/forums/index.php?showtopic=282
Temat: Etching
Just realized the "mist" from that acid seems to have put an orange/brown film on a whole box of router bits and a dovetail saw which were sitting near where I used it the other night. I had it a couple feet inside my shed with the doors open. I guess "outside" means completely outside from now on. :-[
Źródło: midibox.org/forums/index.php?showtopic=7230
Temat: can i cut PCB with jigsaw
Wow deja-vu! ;) Sorry to come into this one late, trying to catch up on forum reading too Back in 2003 we had a thread going about this stuff: http://www.midibox.o...php?topic=748.0 Those router bits I mention are still my favorite for proto work, and at the risk of repeating myself check this image: [img width=460 height=420]http://www.avishowte...p/P1010121b.jpg[/img] The board clamped in as bare uncut copper, and the tool shown made all the holes and cuts. This board was drilled and edge routed in less than 5 minutes, I'm wanting to say the tool speed was around 25,000 rpm. This shows how much sideways load these bits will take, I...
Źródło: midibox.org/forums/index.php?showtopic=6771