Search found 80 matches

by rockycarter
Fri Mar 09, 2018 6:22 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

dolmadis thank you. yes it is a great learning curve. things are looking really good so far. dolmadis i find with this setup. i am having problems with vibration. this unit is so sensitive. especially at high mag. i think its time to take a page out of husqvarna book. this should help with vibration...
by rockycarter
Sat Mar 03, 2018 6:37 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

hey Lin i know your following this. i have mine done complete. i was wondering have you been in touch with the engineer of our little group. if you have tell him i am rolling. i have just received the 2X mitutoyo this week. i have already replaced the bottom element. it is ready to go. Lin ask the e...
by rockycarter
Sat Feb 24, 2018 6:41 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

I thought i would try to find this thread. A couple of members and myself from another forum. Have been working on building a home made microscope. I will have mine complete very soon. Just waiting for some more glass to come. My friends are at the same place with with there microscopes. We are very...
by rockycarter
Mon Nov 20, 2017 7:31 pm
Forum: Equipment Discussions
Topic: PN150 with beta ring on ebay now
Replies: 26
Views: 3481

PN150 at 5x lou would that be possible. I have the 150mm PN. I purchased one from a gentle man in Thailand. This lens is huge and very heavy. He is a great guy to deal with and very honest . I got caught up in a scam earlier this summer. I have noticed that some very high end lens are up for sale on...
by rockycarter
Sat Aug 19, 2017 4:47 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

How high voltage can I apply to the VCM? Not sure how much I will need but 12V is not enough. I run 25V with a dropping resistor and it works well. I think they run at rated current without resistor at 13.6V, so I will need to supply that. yes ray that is right. These lights run at 13.6 to 13.7 volt...
by rockycarter
Sun Aug 13, 2017 3:32 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

Here is how i did my cobb angel eye. I purchased a AC to DC converter at amazon.ca 25.00 Canadian. The power supply is 12 volt 5 amp max. I went to a hardware store purchased a dimmer switch along with a switch box. I also purchased a cheap power bar. I cut the power cord in half on the power bar. w...
by rockycarter
Sun Aug 13, 2017 3:17 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

mjkzz thank you for sharing. I very much enjoyed the article well done.
by rockycarter
Sat Aug 12, 2017 4:58 pm
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

yes ray this is the light. Ray good idea put a resistor in the circuit. push the load through the light. that will definitely brighten the light. that is a good idea for sure. i may try that as well.
by rockycarter
Sat Jul 08, 2017 10:09 am
Forum: Equipment Discussions
Topic: Mitutoyo objective lens coins
Replies: 64
Views: 15053

ring light

I wanted to try a ring light on coins. Here is a couple of photos taken with a ring light mounted on a enlarger lens. The coin is in a 2 x 2 holder
Image
Image
by rockycarter
Thu Jul 06, 2017 7:41 am
Forum: Equipment Discussions
Topic: My Low Cost Semi-Automatic 4ยต Step Device
Replies: 7
Views: 1813

i like what you have built excellent. i do all my stacking by manual work. i want to learn it this way first. when i get very comfortable with making stacks manually. i will will then look at motorizing my setup.
by rockycarter
Sun May 21, 2017 6:43 pm
Forum: Equipment Discussions
Topic: 80mm lens shootout - for coin photography
Replies: 48
Views: 19358

Lucht Lens ~ Crop E fixed Aperture

Ray my Lucht lens is the same. It has a fixed frosted aperture
by rockycarter
Sat Apr 29, 2017 5:47 pm
Forum: Equipment Discussions
Topic: Amp Dial on my Zeiss Power Supply
Replies: 22
Views: 3770

Rudix The 240V won't be 3 phase, it would be normal single phase as used in EU and here in South Africa. Not really more dangerous than 110V, other than packing more "kick"! 3 phase would be 380V but it is only used on heavy electrical equipment. Looks like a great power supply! The best thing to do...
by rockycarter
Fri Apr 28, 2017 5:46 pm
Forum: Equipment Discussions
Topic: Voice Coil Rail
Replies: 260
Views: 46594

mawyatt thank you. now your math is correct now i understand. again thank you
by rockycarter
Fri Apr 28, 2017 5:43 pm
Forum: Equipment Discussions
Topic: Amp Dial on my Zeiss Power Supply
Replies: 22
Views: 3770

75RR your old unit was supplying at 10 volts. the unit would supply up to 10 amps. i would not set the amperage on your new to you unit at 8.3 amps. you have quit a power supply there. your unit is designed to work single phase 110- 120 volts standard house load. looking at the data plate. your unit...
by rockycarter
Fri Apr 28, 2017 9:53 am
Forum: Equipment Discussions
Topic: Voice Coil Rail
Replies: 260
Views: 46594

mawyatt I was wondering how did you come up with these values. I would like to understand these. I like what the members are doing here. This speaker acts like a trip coil very interesting. So for a case that uses a 8 bit DAC and would like current to stay within +-1LSB at say 250ma load current wit...