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  • Scraping perpendicular, parallel, and coplanar surfaces
    I was prowling through my favourite scrap metal yard in UK, in the mid 70's and came across a drain cover I got the idea of a surface plate because it was cast iron, about 24" square, and about 1 1 2" thick
  • How much do you charge for plasma cutting time? - CNCzone
    When you nest parts there also is a scrap spacing between them so I add about 1 4" around the part In the case of material for an 11" disc I would charge the customer for an 11-1 2" square piece of material so 11 5 x 11 5 = 132 25 square inches x 07 (7 cents per square inch selling price listed above) = $9 25 for material
  • Material Hold down 101 - CNCzone
    Step1: Drill and tap a hole in a plate of scrap that you bolt to the table (i e this is now your simple fixture plate) Step2: Place the stock on top of the fixture plate and hold it in place with strap clamps (i e clamp it down) Step2: Drill the holes that you can access
  • Clamping Threaded Rod? - CNCzone
    For a cheesy but reasonably accurate setup, I'll grip up any old scrap short piece of bar stock rod Face, Drill and tap through it on center with the tailstock and it should run true as long as you don't remove it from the chuck Then thread in the threaded rod and use a lock nut to keep it tight in the scrap rod
  • Keeping parallels snug in a Kurt Vise - cnczone. com
    A swiss Mallet Gehring I think is the name They are by far the world's best for mill They are really expensive, like kurt vise, but worth it The are black rubber grip molded on grey metal with White plastic knobs That strike your matrial When they get old you can just barely jear the little pellets moving in the head when you shke it
  • Tapping holes for 4-40 machine screws - CNCzone
    The tap drill size for a #4-40 hole is #43 or 0890" If you are tapping in a machine (using rigid tapping or a floating tap holder), you can use a spiral point tap if the hole is a thru hole; it will push the chips ahead of the tap
  • Trying to cut Magnesium sets it on fire ! what can I do? - CNCzone
    Machining of magnesium and alloys with a high magnesium content are well know fire risks and need a proper fire risk assesment for both the storage of the scrap as well as the parts The tools have extra clearances and well defined rakeangles to keep the cutting action clean with the least amount of friction
  • Build Thread ATC Spindle Assembly using a Chinese BT30 . . . - CNCzone
    Its been 2 years since I last cast some metal and I have forgotten a few tricks The biggest problem is I didn't include a riser to feed part of the cope As the metal cooled it contracted in this area and has lead to large shrinkage cavities on that surface of the bracket
  • Best material for a NEWBIE to practice on - cnczone. com
    Join Date Mar 2017 Location United States Posts 181 Downloads 0 Uploads 0
  • Best CNC Mill for $3000 budget? - CNCzone
    Thanks for the quick reply In the Syil lineup, they have: Syil X2 for $2395 Syil X5 for $3495 Syil X4 for $5495 Looks like a much more substantial machine but is out of my price ran





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