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Search: Posts Made By: BernardR
Forum: General - MM Build Sat 09 February 2008, 13:48
Replies: 94
Views: 38,943
Posted By BernardR
I'm a late comer to this thread, but having done...

I'm a late comer to this thread, but having done a lot of home machine rebuilding over the years I have found that not all paints are created equal. One of the best paints I have found for painting...
Forum: 50. Toolheads Thu 07 February 2008, 15:12
Replies: 55
Views: 26,893
Posted By BernardR
Probably more information than you need!!! ...

Probably more information than you need!!!
http://www.waterjets.org/about_abrasivejets.html
Forum: 50. Toolheads Thu 07 February 2008, 11:45
Replies: 55
Views: 26,893
Posted By BernardR
John, Before you get too excited, water jet...

John,

Before you get too excited, water jet equipment hardly falls into the easy diy range, you are talking pressures up to the 50,000 psi range and for glass you will need an abrasive solution....
Forum: 50. Toolheads Thu 07 February 2008, 10:32
Replies: 55
Views: 26,893
Posted By BernardR
John, A quick google of 'cnc glass cutting'...

John,

A quick google of 'cnc glass cutting' yielded about 150,000 results. For your stated requirement of a through cut, water jet seems to be the professional method of choice.
If you really...
Forum: 50. Toolheads Wed 06 February 2008, 14:26
Replies: 55
Views: 26,893
Posted By BernardR
Gerald Your wife may well be interested in...

Gerald

Your wife may well be interested in this video: http://www.youtube.com/watch?v=EKvWFZacQYA

As a stained glass worker myself, the video shows the type of cutter that I use, swivel head,...
Forum: 70. Control Systems Sun 03 February 2008, 12:23
Replies: 333
Views: 122,746
Posted By BernardR
Sounds like you need a low signal PCB mount. ...

Sounds like you need a low signal PCB mount.
Have a look at some of these, alternatively reed relays would also suit your needs: http://www.mouser.com/catalog/633/1609.pdf.
Mouser is a good...
Forum: Archives Fri 01 February 2008, 13:40
Replies: 6
Views: 2,678
Posted By BernardR
Ho Spider, You sound like a guy in a hurry. ...

Ho Spider,

You sound like a guy in a hurry. Realistically there's a long road ahead and a big investment both financial and time.

You say you want to make furniture and later talk about...
Forum: 70. Control Systems Mon 21 January 2008, 09:56
Replies: 333
Views: 122,746
Posted By BernardR
Greg, I used opto home/limit switches on my...

Greg, I used opto home/limit switches on my mill. As with most things there are trade offs; the biggest downside as far as I am concerned was the wiring and installation.

Mine I believe are...
Forum: 10. Base Table Sun 20 January 2008, 11:41
Replies: 32
Views: 22,016
Posted By BernardR
Nils, There are many different vac hold down...

Nils, There are many different vac hold down systems available and really depends on the type of work you do. If you have repeating work the simplest is a varnished sheet of MDF with each area to...
Forum: 10. Base Table Sat 19 January 2008, 17:52
Replies: 32
Views: 22,016
Posted By BernardR
Dave, I was aware of the compressor driven...

Dave, I was aware of the compressor driven vacuum pumps, but personally didn't like the idea of running a 3 to 5HP compressor to pull a vac that can be obtained from a 1/2 to 3/4 hp motor. I had...
Forum: 10. Base Table Sat 19 January 2008, 13:23
Replies: 32
Views: 22,016
Posted By BernardR
So far everything I have read here deals with...

So far everything I have read here deals with high volume low pressure type systems. A typical shop vac has a max static head of 60" h2o, the Fein III is much better at 105", these figures convert...
Forum: Archives Wed 16 January 2008, 13:20
Replies: 5
Views: 2,297
Posted By BernardR
US ac motors run 3450 RPM (2 pole) 1725 RPM (4...

US ac motors run 3450 RPM (2 pole) 1725 RPM (4 pole).

Depending on the duty cycle and the amount of power needed it might be simpler and cheaper to use a dc motor and simple variable dc power...
Forum: Archives Wed 16 January 2008, 12:07
Replies: 5
Views: 2,297
Posted By BernardR
Single phase ac motors require a capacitor to...

Single phase ac motors require a capacitor to start them and once started their rotational speed is fixed by the number of poles.

Three phase motors do not need a capacitor to start them and once...
Forum: 60. Wiring & Cable Management Mon 14 January 2008, 22:35
Replies: 12
Views: 7,165
Posted By BernardR
Heath, I'm not sure what type of high...

Heath,

I'm not sure what type of high current work you are doing and with what type of equipment you work on. While I would agree that if you have the right type of equipment I would prefer to...
Forum: 60. Wiring & Cable Management Sun 13 January 2008, 08:51
Replies: 12
Views: 7,165
Posted By BernardR
May I inject a note of caution into this...

May I inject a note of caution into this discussion. The biggest problem I find in crimping is getting decent quality crimping terminals. Because in the most case they are covered in an insulating...
Forum: CNC motion control software Tue 08 January 2008, 01:02
Replies: 55
Views: 24,530
Posted By BernardR
Gerald, the reason I brought the matter up was...

Gerald, the reason I brought the matter up was that reading through several posts it did appear that there are several people who sound as if they could use the help of Quantum, and also having just...
Forum: 70. Control Systems Sun 06 January 2008, 19:18
Replies: 15
Views: 7,162
Posted By BernardR
Using fairly large servos with a big supply I...

Using fairly large servos with a big supply I took the precaution of using movs, they're cheap and good insurance.

There's some information here: http://morley.eng.ua.edu/G332b.pdf
Forum: 50. Toolheads Sat 05 January 2008, 11:04
Replies: 22
Views: 8,481
Posted By BernardR
Nils, At the moment the Useenco site is...

Nils,

At the moment the Useenco site is down, but if you look at the photo in the Shopbot site of the digitizer and indexer, the tailstock shown there is identical to those sold with rotary...
Forum: 50. Toolheads Sat 05 January 2008, 08:37
Replies: 22
Views: 8,481
Posted By BernardR
Nils, Normally on a mill or a router table...

Nils,

Normally on a mill or a router table the work piece is firmly clamped to the body of the machine and the cutting forces all ultimately react to those clamps (and friction). When you mount a...
Forum: 50. Toolheads Fri 04 January 2008, 20:04
Replies: 22
Views: 8,481
Posted By BernardR
Nils, I can see nothing wrong with using...

Nils,

I can see nothing wrong with using either the headstock from an existing lathe or using a separate dividing head. My own inclination would be to go to a separate head which can be tilted...
Forum: Archives Fri 04 January 2008, 08:17
Replies: 1
Views: 1,647
Posted By BernardR
Installation, Alignment & Adjustment

In reading through the various threads, so far I have been unable to find anything quantifiable about how peoples machines are actually performing.

As one of the most significant factors in...
Forum: 50. Toolheads Thu 03 January 2008, 23:42
Replies: 22
Views: 8,481
Posted By BernardR
Nils, I feel there may be a small...

Nils,

I feel there may be a small communication problem here where guys from two different disciplines are trying to reach an understanding.

Generally in the machinist field I would be...
Forum: 70. Control Systems Thu 03 January 2008, 13:13
Replies: 13
Views: 4,555
Posted By BernardR
Mike, You sound about as bad as me, my wife...

Mike,

You sound about as bad as me, my wife and I have a 1 bedroom 2500 sq ft home!! and no I'm not really a MCP my wife in her own way is as bad as I, mine just takes up a bit more space. The...
Forum: Motors & their mountings Thu 03 January 2008, 12:40
Replies: 97
Views: 53,350
Posted By BernardR
Mike, Where were you when I was doing my...

Mike,

Where were you when I was doing my sevo's setup?
Thank you for an excellent set of tests, I will probably go with steppers when I get into the MM and I'm afraid I have zero experience...
Forum: 70. Control Systems Thu 03 January 2008, 11:18
Replies: 13
Views: 4,555
Posted By BernardR
Mike, Do you have an URL to the Enco device?...

Mike,

Do you have an URL to the Enco device? I haven't used one before.

What I'm also doing is trying to catch up with whats been happening in the Mach world, especially with things like...
Showing results 1 to 25 of 32

 
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