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    Burning out a tap

    Sorry for not relaying what I found... when I went to the shop and asked if they had used a carbide tap...they said no but after a short pause I was informed that since the tap broke with only a few threads cut they had made a punch out of carbide and it broke...bottom line is that attacking it...
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    Burning out a tap

    It looks like there is one part where a different tap was used, I burned out the tap in the last of three in the usual amount of time. On "the difficult one" I am able to turn the part over and attack what is close to a flat surface but the progress is slow as it was originally. I do see it...
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    Burning out a tap

    Very good point - I occurred to me that this "broken tap" may not be a tap because it looked too solid- no flutes. I will check it with a magnet as you said as well as cleaning and checking for broken pieces and inspect the electrode. Less on time and more off time - I have very limited...
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    Burning out a tap

    First one I burned no problem, in just a few minutes...the second one just did not want to burn. I tried changing settings increasing power, frequency but after a couple hours I got almost nowhere. I am using a 0.070 carbon rod on what looks like a 6-32 tap (I didn't break it so I don't know...
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    WTS - Thread Chasers

    Do you have any metric chasers? My head is a Geometrix 9/16 DSA
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    Geometric DSA vs. DSN die heads - any difference?

    I have a DSN and I was wondering about the difference between it and a DSA. I'm guessing it may have been a special for the Navy (?) I just got it yesterday and got through the chaser loading, set up and test. I have some stainless bolts I need to make and wonder about the 15 degreee hook vs 10...
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    Brass electrodes

    I guess the good news is that brass should be a usable electrode material. I bought the rods knowing they were for "hole poppers" but wasn't sure if there was any major differences between those and my machine. Based on using graphite electrodes what setting changes would be required for brass...
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    Brass electrodes

    Hey Russ that oil is working great...except with Brass 9-) The electrode is a tube and I'm flushing through the tube. I'll take a look at the end and see how it's looking. Bill
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    Brass electrodes

    I am a complete newbie with plunger edms and have a question about brass electrodes. The only job I've done is to put an 0.055 hole in a stainless (304) pin. I found the hole needed to be 0.070 and couldn't find any reasonably priced carbon electrodes, so I bought some 0.070 brass items off...
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    WTB Hardinge HC Handwheel and crank

    I'm still looking for a handwheel.
  11. L

    Hardinge Chucker Speed Control Issue

    Thanks to this thread I went out and turned the screw on my HC and got the speed control working!!!:cheers: Now I need to set up the automatic threading...:eek:
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    WTB Hardinge HC Handwheel and crank

    The carriage handwheel and cross slide crank were broken on my HC when I got it. I would like to replace them with Hardinge parts. I've looked high and low for replacements but may have to settle for aftermarket items. If you have these items please send me a PM Bill
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    WTB Metric Leadscrews and followers for Harding HCT

    I would like 1mm. 1.5mm lead screws and followers. Other metric sizes considered too. I have English ones to trade or cash to buy. I'm also looking for a reasonably priced 3 or 6 jaw chuck with 2 3/16-10 threads Bill
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    Hardinge HC Questions

    Thanks Brian - I got a manual and found the tool holder in there. Now with a little information I could be dangerous. My next problem - In spite of being "electrically challenged" I have an idea of what may be wrong here but thought I'd run this by the greater wisdom within this forum. I'm...
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    Hardinge serial numbers 1902-1977

    The machine I listed below was made late 1969 according to the local Hardinge dealer
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    Hardinge HC Questions

    I have a couple basic questions 1) There is an airline (3/8" poly) coming out of the box for the threading unit (?) on the right side at the the back of the lathe and I haven't seen an obvious fitting that it goes to. There are two other lines going to the threading unit, and a supply (?) line...
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    Hardinge HCT Wiring

    I just got an HCT last week. I'd like to get a copy of te wiring diagram. I actually have an original that I will get copied but its missing some info the bottom center of the shhet. Thanks, Bill
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    Do you use your shop for fun, hobby stuff ?

    I've just finished getting all the equipment that I had as a goal for my shop...well maybe a piece or two I hadn't planned on strayed in...It has been my objective to get some the basic machines to make motorcycle parts for Laverda motorcycles. I like the concept of making a few things for a...
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    Hardinge serial numbers 1902-1977

    Thanks Jim - I was looking at the wrong end. I just got the machine into my shop and am starting to assess the damage from its faceplant. I'll go have a look to see if my number is visible. s/n HC 2927 H Is there a good source for parts? We have Beaver Machine Tool in Portland but I've never...
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    Hardinge serial numbers 1902-1977

    OOPs The machine is an HC. It would be nice to know the year it was built but my main reason for asking is when I tried to order new handles they asked for the serial number - I got a general location but wasn't able to find it. Today it will be coming out of the cold and into a warmer shop and...
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