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Re: Small drill press
On Fri, Jun 3, 2022 at 01:33 AM, OldToolmaker wrote:
The Cameron drill press I found onlineWhen you get into serious micro-drilling you can spend many thousands (?/$ - whatever). The last machine I saw (American made) did not have a spindle - drills were held in a sapphire vee block with the drive belt running over the shank to rotate them - all drills had to have an enlarged shank. I dimly recall it was by Najet. The belt was angled to push the drill into the work. My old boss made his own with a PTFE vee block, and the drill horizontal, to drill hundreds of 0.002" & 0.003" holes in dies used to extrude material for the earliest carbon fibres. He said it was slow but never snapped a drill. With a Unimat consider mounting the job on the cross slide and using the carriage for the feed. It might be worth making a vertical slide if you have many of these jobs to do. Note that micro drilling is considered (by some) to be using any drill under 0.1" and requires special care. Also drilling a depth more than 10 times the drill diameter is considered deep hole drilling, so when I was drilling 1.2 mm holes 30 mm deep I should have had all sorts of problems, but with the correct choice of drill it was OK. Also with the 0.9 mm holes 15 mm deep - all done on the SL with a bit of a special setup. I have yet to try a 0.05 mm (~ 0.002") drill - smallest I have - but the company who supplied it go down to 0.0002". However, their old catalogue says they do not offer a sharpening service below 0.0008". I'm not sure where I would start with something like that |
Re: Small drill press
¿ªÔÆÌåÓýHi Gang: My brother-in-law had one of these HF drill presses: We did a lot of work with it and it did fine. The video show a cast iron base and table, but the photos show a formed sheet metal table. Get cast iron if you can. $90 isn't too bad. For little holes, under 0.010" I would suggest any drill press / mill with high RPM and a sensitive drill chuck:
?? $39 not bad. I found
even the return spring interfered with the feel so I would
disconnect it. Carl.
On 6/2/2022 8:44 PM, Richard Burrows
wrote:
Micromark has a couple listed that may work for you... |
Re: Small drill press
Why not just get a micro Jacobs chuck adapter? Amazon has this one that
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fits 0.3mm-3.2mm bits (0.013"-0.128"). $9.99 with free shipping and free returns. Elliot On 6/3/22 08:21, OldToolmaker via groups.io wrote: Thank you. --
Elliot Nesterman elliot@... www.ajoure.net "The finest jewel cannot disguise a flawed character." |
Re: Small drill press
Thank you.
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On Thursday, June 2, 2022, 8:44 PM, Richard Burrows <bluerandonee@...> wrote:
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http://www.homemadetools.net/ ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
Re: Small drill press
Every time I see those sensitive drill presses at auctions, I think "now I can get one cheap", but they always go for way too much.? The last time, a few years ago, a local auction had about 15 of them with various options (don't recall the brand), and none of them went for less than $600. -Dave
On Thursday, June 2, 2022, 05:33:46 PM PDT, OldToolmaker via groups.io <old_toolmaker@...> wrote:
The Cameron drill press I found online Dick |
Re: Small drill press
The Cameron drill press I found online Dick |
Re: Small drill press
Beware of drills with collets - some of them (EG Poxxon) only hold a limited number of sizes. It's OK if you have drills with 3/32" shanks, or similar, but if you have plain number drills many will not fit. If you have ER collets the smallest you can hold is 0.5 mm - I have some very small drills (0.05 mm) which are on a 1 mm shank.
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Re: Small drill press
Cameron drill press is excellent, but pricey.
Bill -----Original Message-----
From: Don Bowen <don.bowen@...> To: [email protected] Sent: Thu, Jun 2, 2022 12:37 pm Subject: [Unimat] Small drill press I am looking for recommendations for a small drill press for the smaller
number drills. -- Don Bowen --AD0NB-- |
Re: Ideas Please for Neat Clean 24v Wiring
Not sure what the distinction is. It is best to obtain low speeds using the pulleys, and then use the variable speed on the motor for fine tuning. That way you get the maximum available torque for any given speed, You could use the usual motor bracket with one idler pulley or the less common low speed version with two idlers. Or you can make up some equivalent system, whether a motor bracket or not.
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Re: Vertical Milling Device????
These are very useful photos.? I am currently working on something similar , as per attached photo.? However, I machined an aluminum block to fit into the Unimat mount and am securing with screws.? Am I to assume that the screw is 1/4-20 and the support rod is 5/16?
Please note that this device is supported with a cut off Unimat bed.? When I did this previously, some here were crying and complaining what a sacrilege it was to cut up a Unimat. |