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  1. jfoldbar

    masonry vacuum drill bits

    i dont see how i could increase suction as im already using a really powerful vacuum. what do you mean by "slow down feed rate". im assuming you mean the slower the drill hammers, the more chance the vacuum has to suck up. while drilling, i wasnt applying any pressure to drill, purely letting...
  2. jfoldbar

    masonry vacuum drill bits

    thanks for the replies guys. first up i tried Milwaukee 18mm by 250 long. in both concrete and sandstone. using a 2000w vacuum. works great. i timed it and its almost twice as quick. the problem is when i used bits 400mm long. they just simply block up after a few holes. first time i was able to...
  3. jfoldbar

    masonry vacuum drill bits

    im wondering if anyone has any experience with using hollow masonry vacuum drill bits? if so, how were they for you? i have bought a few and so far having a hard time with them.
  4. jfoldbar

    piston size

    hi all. im new to this forum hope to learn from it. i have a question i hope can be explained regarding engine piston size. so i recently bought a new truck for my business. its an isuzu with a 5.2liter 4 cyl motor. and i got thinking why are engine designers now making engines with larger...

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