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Thread: What did you learn today?
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6th Nov 2015, 10:46 AM #496
There are several types of people when it comes to trying new things.
Those that have a crack using some knowledge of subject. We would not get new stuff without these.
Those that don't have a crack. The careful ones. Not really a negative thing. They recognise limits.
Those that say to everyone else "You Must Not". They do have their uses at times. Newbee's take heed.
Take proper precautions and have a crack I say.
I have a new attitude to the forum. I am tired of pussyfooting around with members who are "sensitive" to the truth pointed out to them. If they want to take their bat and ball and go home that is their choice. Of course them "growing up" would also be a help. My position is that I have an opinion and I have as much right to that opinion as anyone else has to theirs. Many times I have found a situation where I have been abused because members have have shown a decided lack of understanding of the English language and "made up" their own meaning's to my words. When I write something it comes from "my" mind. No matter what anyone says, the meaning is entirely and forever, exactly what I intended it to mean. It may be written wrong. In that case, that is all it is. Misconstrue my words and I might mention it. Twist them around to suit yourself and I will TELL you.
Every member has the right to be regarded as an equal and to have control over the meaning of their words. Anyone replying to them should have the honesty to recognise this.
Dean
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6th Nov 2015, 12:05 PM #497Pink 10EE owner
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I heard somewhere you could turn them backwards and use them on sheet metal, although you can get sheet metal blades for circular saws.
Gold, the colour of choice for the discerning person.
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6th Nov 2015, 01:09 PM #498
I just remembered that I bought one of those sheet metal saws with opposing blades recently. Yes it was a cheap brand. I have not managed to try it out yet.
Dean
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6th Nov 2015, 01:20 PM #499
You know, it would. The bit that stops it is personal attacks. If we learn to 'attack' or better 'dispute' OPINIONS or information, rather than the people who have the 'nerve' to post them, then there is not going to be an issue. Presumably we are all grown-ups and are therefore able to accept differences in opinion.
Correcting or supplementing INFORMATION is absolutely required for learning! But again, it is the information that is to be addressed, NOT the person who provided information that could be improved on.
Also, polite responses like "thanks for pointing out that I overlooked.....in my original post", or "I actually formed this opinion on the basis of.... I'm happy to let others see it differently" or "My way works OK on my machines, sorry it didn't help on yours" or similar. That allows other to see we acknowledge the response and don't feel 'attacked' by differences of opinion and improvements on our information. Maybe others will have 'balls' to voice insights or even controversial views.
The trick is never to respond with a counter-attack.
I formed this optinion on the basis of several years of reading and contributing to several forums - and responding poorly and badly on many occasions. Including on this forum.
And I could be completely wrong!Cheers, Joe
retired - less energy, more time to contemplate projects and more shed time....
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6th Nov 2015, 02:50 PM #500Most Valued Member
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6th Nov 2015, 04:13 PM #501Banned
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That sounds good, we all should learn from our mistakes, some learn slowly, some never; unfortunately, for two or three I think never. But, look who's talking!
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6th Nov 2015, 06:28 PM #502
I got presented today with a framed chinese proverb, from a guy (a customer) who is as crazy as they come, he is a real pleasure, and lots of fun to work with.
Ah yes... the proverb... Man who say it cannot be done should not interrupt man doing it.
Says it all really, over the last few weeks we have done some things that the experts say would never work... guess what..
Ray
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6th Nov 2015, 09:56 PM #503
Basic child rearing philosophy, "love the child even tho you dislike the childs behaviour". Relevant to all dealings with other people.
Dean
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13th Mar 2016, 03:23 PM #504Most Valued Member
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I learnt 3 things today
1. My precision modular vice I got from Asset is not fool proof if you never clean it...lol
2. I have been pussy footing around with a 50mm face mill with TPUN inserts
I bought some cheap inserts in the last couple weeks $250 worth or $25/10
Well during the week I was thinking about sending a message to the ebay seller telling him they were junk...glad I didnt
My experience was that at around 1100rpm with .010 DOC I couldnt get a decent finish and the inserts were not lasting very long.
Well today I doing some more work on the mill and I forgot that I had the table feed at maximum travel speed...well by the time I had thought about was happening and that I noticed no loud bangs or any thing I let the task finish
I was suprised at the finish...it was fantastic, continued on with all the other bits and the inserts are still on the same cutting tip.
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15th Mar 2016, 09:49 PM #505New Member
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Abrasive disc chopsaws are a joke
I learned that chopsaws are a joke, like long weights and left-handed screwdrivers.
After looking at all of them, flimsy pressed metal base, simple vise, 355mm disc, I guessed that duty cycle was the major difference and bought one destined for infrequent use. a test cut on RHS had it skewing off-line alarmingly. Thinking that it might be the quality of the '2 free discs included' I put a name brand disc on and cut again.
Way better, but still skewing off-line and much wider cut than the width of the disc.
I put a 1mm cut off disc in my angle-grinder and tried again... cut like butter, way faster, and if I'm careful, way more accurate.
What am I doing wrong, or, are chopsaws just a bad joke anyway?
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15th Mar 2016, 10:23 PM #506Banned
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The title of your post is pretty accurate. Chop saw blades are flexible and so they flex, most notably on angled cuts. You could try cutting very, very slowly, once through the material drop the blade through the cut multiple times and use the thickest blade you can find. Smaller diameter blades flex less and so tend to give a more accurate cut, but really you are pushing the proverbial uphill.
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15th Mar 2016, 10:30 PM #507I break stuff...
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I hate the things anyway, but from memory if you lean on the handle much at all when cutting, the discs flex an alarming amount, meaning they cut ten kinds of crooked. Try cutting with just fingertip pressure on the handle, see if that sorts it out.
If it doesn't, I'd suggest you've got a bigger issue - maybe arbor flanges that aren't perpendicular to the shaft, or some endfloat in the shaft...
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15th Mar 2016, 11:04 PM #508Most Valued Member
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I've had several of these over the years, expensive to keep the discs, noisy, dirty, smelly things, plus as you say lack of accuracy. I ended up buying a 6X4 bandsaw and never looked back, there has been the odd occasion where something was a rush job and cutting RHS at 3.00 AM no problems.
KrynTo grow old is mandatory, growing up is optional.
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16th Mar 2016, 01:16 AM #509
I agrre with everything said except that I have no problems with using a chop saw at 3:00am. It is true that they will wander with too much pressure, but my cheapie has never wandered that far. I suspect a problem. Used properly I could get pretty accurate cuts. Just lots of burrs and a chunk left on the piece that is cut off like the pip when parting.
I found that some brands of disks would glaze up and stop cutting. roughing up the edge would fix it for a while. Flexovit was one such brand. This was a few years ago. I haven't used it since I got my bandsaw and hope to never have to again. They do have their uses. You can carry the chop saw to the job and clamp it on to the work in any position.
Dean
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16th Mar 2016, 08:33 AM #510
FWIW I've used Hitachi 14" chop saws for as long as I can remember and never had a problem with accuracy. It might help that my main saw is built into a steel frame work so that I can just feed stock in and it's guaranteed to be straight and true with respect to the base but I also have a couple that I take out to jobs and they've always cut true.