Re: [Homebrew_PCBs] Re: drill pcb
2016-02-22 by Michael Young
Aside from runout, feeds and speeds can be the culprit. FSWizard Pro gives the following for a 0.03 2-flute, uncoated carbide drill in FR4. RPM 20k SFM 150
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Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: Drive Belts
2016-02-22 by Harvey White
... The 3 was (IIRC) a slightly bigger version of the SL with improvements in the ways. Have you a link to the file? I d like to get mine back up and running.
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: Drive Belts
2016-02-22 by symons391@...
I have a miniature Unimat 3 lathe & I put a file together some time ago about using the drive belt material & making the joins . The Unimat 3 & 4 lathes
Re: drill pcb
2016-02-22 by bobledoux@...
I stand corrected. I did not get my drill press from harbor Freight. This is the model I have:
Re: drill pcb
2016-02-22 by craigl2@...
The real problem run out caused for me was the drill wandering before biting in and therefore being off target . This was still a problem although less when I
Re: [Homebrew_PCBs] Re: drill pcb
2016-02-22 by Harvey White
... Some of this you can see. (for the too much) My opinion is that if you can see the drill wobble, (and especially if the very fine drill wobbles more than
Re: [Homebrew_PCBs] Re: drill pcb
2016-02-22 by <n0tt1@...>
The Harbor Freight models don t look the same as the one from GB. Do you have a HF model number of the one you have? Thanks, Charlie On 22 Feb 2016 06:25:46
Re: drill pcb
2016-02-22 by craigl2@...
How much runout does it have? And, how much runout is too much.? I ask this because while I was in the process of building a inverted drill (to drill PCBs
Re: drill pcb
2016-02-22 by bobledoux@...
This drill is sold in the USA by Harbor Freight. I have one. I use it for drilling PCB s. There is too much run out for carbide bits. It works well with
New file uploaded to Homebrew_PCBs
2016-02-22 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File : /Drive
New file uploaded to Homebrew_PCBs
2016-02-22 by Homebrew_PCBs@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Homebrew_PCBs group. File : /Drive
Re: [Homebrew_PCBs] drill pcb
2016-02-22 by casy_ch@tbwil.ch
Hello Roberto For the price it is really a machine which should work for PCB drilling. Should it have a bit of wobble, you can still change the chuck against a
Re: [Homebrew_PCBs] drill pcb
2016-02-22 by DJ Delorie
rfmicrowave1@libero.it [Homebrew_PCBs] ... You can t beat free... (assuming you have the dremel already)
RE: [Homebrew_PCBs] Re: Plastic Resist From 3D Printer?
2016-02-21 by Dennis Shelgren
If you ve seen the LPKF units, it s just all the steps in a single machine. I.e. it mills, drills and exposes prepregs. Etches if necessary. Then indexes and
drill pcb
2016-02-21 by rfmicrowave1@...
hello to the group I wanted to know what would be a low cost-effective solution to drill pcb ? I had found this on ebay PCB Art Mini Bench Drill Press 6mm
RE: [Homebrew_PCBs] Re: Plastic Resist From 3D Printer?
2016-02-21 by Jeff Heiss
Re: [Homebrew_PCBs] Re: Plastic Resist From 3D Printer?
2016-02-21 by Dennis Shelgren
I ve got a fairly high end 3d printer and could probably print fine enough for pcb resist. The trouble I see is keeping everything at the same temperature so
Re: Plastic Resist From 3D Printer?
2016-02-20 by mountaindog65@...
3D print might be feasible but IMHO lots of experimentation info is lacking. For example, these guys are using extrudable conductive ink and claim to be able
Re: Guillotine cutter
2016-02-20 by mountaindog65@...
Hi, A small ceramic tile saw will work too. They also use small diamond blades and water to keep the dust down. Spendy but useful for other things too.
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-18 by pierreraymondrondelle
The color seems to be related to the material the belt is made of but this seems as well to be changing from one manufacturer to the other one ! Some years
RE: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-18 by Tony Smith
Huh, the world is full of things you didn’t know exists. I wanted something like that a few years ago when I needed a custom belt. Does it have an actual
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by pierreraymondrondelle
on eBay, you can find nylon wire specifically made for belt building. Choose a 5mm dia, green color this the best one for the Unimat lathes. It doesn t expand
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by Malcolm Parker-Lisberg
Jean-Claude Thank you for your kind comments. Must go and use it for an add on PCB I am making to add feedback to a cheap ebay triac lamp dimmer so that the
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by casy_ch@tbwil.ch
Congratulation Malcom for this extended work. Really nice. Jean-Claude Am 17.02.2016 um 15:21 schrieb Malcolm Parker-Lisberg
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [3 Attachments]
2016-02-17 by Malcolm Parker-Lisberg
That is very simillar to the one I made, see: https://www.youtube.com/watch?v=AhlRkO0EcFo Malcolm I don t suffer
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [1 Attachment]
2016-02-17 by casy_ch@tbwil.ch
Before a friend ham wanted to throw it to the scrapyard, I could get a hold on it. The needed trafos for the spindle motor and the bulbs were just hanging
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by Stefan Trethan
Once I saw an ad for a used lathe, with an Unimat sitting on top of the ways. The seller had no idea that the Unimat was not part of the larger lathe. At
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by Harvey White
... The problem I ve had with them is that they expand at higher speeds and fly off the drive pulleys. (or almost) The original plastic belts are available
RE: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by keith printy
I have used O rings for belts they can work in a pinch From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Tuesday, February 16,
RE: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [1 Attachment]
2016-02-17 by wb8nbs@...
Purchased at a Ham Radio swap&shop. I drilled the eye out of a Lincoln penny with it once. attached a photo of holes drilled with a #64 bit. The 64 bit gives a
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-17 by Harvey White
... It s very precise, a combination of lathe, drill press, and almost anything else. It s also quite expensive since it is a collector s item at this point.
RE: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [1 Attachment]
2016-02-17 by keith printy
A friend of mine used to use something called a unimat to drill his boards. It was belt drive,but also converted into a lathe. I borrowed it when I did some
RE: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [1 Attachment]
2016-02-16 by Jeff Heiss
Where was the drill purchased? From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] Sent: Tuesday, February 16, 2016 9:58 AM To:
Re: Drilling circuit boards on the cheap:
2016-02-16 by wb8nbs@...
This is what I use for small boards. It only has about an inch and a half throat but is very stable. I think it was used by clock makers but there is no
Re: Drilling circuit boards on the cheap:
2016-02-16 by AncelB
I use a 395 Dremel, which has workable runout and is more robust. I don t use it for side cutting tiles etc. to wear the bearings. I do use it with cutoff
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-16 by <n0tt1@...>
OK on the quiet vacuum and the dust scoop, Harvey. I looked at the drill press/camera device and found it interesting. I downloaded the info and will take a
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-16 by DJ Delorie
me@stempsoft.com [Homebrew_PCBs] ... http://www.grizzly.com/products/Micro-Air-Grinder-17-pc-Kit/H8212
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-16 by Mark Lerman
While not exactly on the cheap , I think my modified version of Harvey s solution is very cost effective.
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-16 by Harvey White
... I have a very quiet vacuum, so it is on all the time with an air scoop to remove the board swarf. ... I have a very crude (but quite workable) air scoop
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-16 by <n0tt1@...>
Thanks for the advice Harvey...I ll look into the methods you suggested. Yeah, the swarf from the board is a problem...have a vacuum at hand, but some kind of
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-15 by Harvey White
... You re looking at parallax as a problem. You re not looking straight down on where the hole should be. One option would be to put a webcam under the
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-15 by <n0tt1@...>
AncelB mosaicmerc@yahoo.com [Homebrew_PCBs] ... stand that seems to eliminate any hand wobble from causing breakage. ... Grizzly pencil-style die grinder.
Re: Drilling circuit boards on the cheap:
2016-02-15 by me@...
I had horrible issues with run out. I sent my drill back to Dremel and they fixed it under warranty. I have not had a chance to try it. My cheap CNC
Re: Drilling circuit boards on the cheap:
2016-02-15 by me@...
What is a Grizzly pencil style grinder? Do you use it to mill? I have not been able to get good results with milling. I think I might need to try leveling
Re: [Homebrew_PCBs] Re: Use for microwave oven ?
2016-02-15 by Corey Minion
Nope As said before, many different methods to destenchify it has been tried. I think I may keep the motor/platter for a painting, automated lazy susan for the
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-15 by Harvey White
... So does mine, so that s a big help. ... I happen to use a Proxxon 12 volt tool in my drill. The bearings and collet are far better than Dremel. That
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-15 by DJ Delorie
AncelB mosaicmerc@yahoo.com [Homebrew_PCBs] ... Me too, but I rarely break bits since I switched to a home-brew drill stand that seems to eliminate any hand
Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:
2016-02-15 by alan00463@...
Just in case you didn t know..... Proxxon makes a separate drill press tool for the IB/E PROXXON - MB 140/S http://www.proxxon.com/us/micromot/28606.php
RE: [Homebrew_PCBs] Use for microwave oven ?
2016-02-15 by Tony Smith
The defrost cycle is similar to what you want, I doubt the actual cycle would match up. The idea is if you had something like pen blanks that are always the
RE: [Homebrew_PCBs] Use for microwave oven ?
2016-02-15 by Tony Smith
Well ok then. Good to see someone making use of them. The local scrappers have discovered microwaves have big chunk of copper in them, so they’re getting