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Type: Posts; User: peteeng

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  1. Replies
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    Re: Designing a new router called Brevis-HD

    Evening all - some flying swarf for your entertainment - Peter

    https://www.youtube.com/watch?v=nkqW-DOXC7w&t=168s
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    Re: Small Concrete CNC Mill

    Hi Juan - Looking good. Maybe countersink the holes vs counterbore. If counterbored size it to suit large washers... :) Peter
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    Re: Designing a new router called Brevis-HD

    Hi All & Sundry - My truck started leaking more from a radiator hose so it was in the shop today getting fixed its been weeping intermittently for a while & I decided it was not getting better . So I...
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    Re: Cast Bench Top CNC Build

    Hi Rohan - Always interested in what people are doing no matter what the material. Keep at it... Looking back at your build list: I use UCCNC and have found it to be easy and reliable. I have built...
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    Re: Cast Bench Top CNC Build

    Hi Rohan - Here's a company in Europe that does this sort of thing... Peter

    https://www.rampf-group.com/de/produkte-loesungen/engineering/maschinenbetten-und-gestellbauteile/
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    Re: Designing a new router called Brevis-HD

    Hi All - I picked up the foundation parts yesterday so can start on the next phase of the YaG build. The structural parts arrive next friday week then I'll have everything to build the machine......
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    Re: Cast Bench Top CNC Build

    Hi Rohan - Yes there are many machines of mineral cast or UHPC out there. Europe tends to go UHPC and EG there's a few threads here on EG and concrete. I'm playing with this one at the moment and its...
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    Re: David A's Benchtop CNC Version 2

    Hi David - You got me excited there I thought you had "real" linear drives but then I looked them up and they are called linear motors...

    https://www.hiwin.us/products/linear-motors/

    Keep at...
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    Re: Cast Bench Top CNC Build

    Hi Kiwi - "orthogrids" don't help you much in the stiffness dept. You need to triangulate as much as possible. This will help the structures rigidity and it will help keep the cast straight as it...
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    Re: Yet another epoxy granite mill

    Hi All- Heres a video on mould release systems...Thomas looking really good....Peter
    <iframe title="vimeo-player" src="https://player.vimeo.com/video/561479798" width="640" height="360"...
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    Re: Cast Bench Top CNC Build

    Hi Rohan - Have you spoken to a caster about the design? Usually they don't like casting square or rectangular grids as when the metal solidifies and shrinks it pulls and distorts the shapes as it...
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    Re: Cast Bench Top CNC Build

    Hi Kiwi Cus - Why the many webbed gantry? It won't be as stiff as a hollow section, especially in torsion and you will need substantial torsional stiffness for this machine& will be relatively heavy?...
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    Re: Milli a new composite mill kit

    Hi All - I have sent a note to G-Penny to see if they do 4 pole metal spindles. Peter
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    Re: Gully's new 3x3 steel CNC router build

    Hi Gully - Well done. 2800hrs over how many years? When do you make sawdust? Peter
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    Re: Milli a new composite mill kit

    Brockard executed that build very very well. The triangulation is key to keeping it quite straight while welding. I think he mentions stress relief and finish machining somewhere as well. The...
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    Re: Milli a new composite mill kit

    Hi Pippin - Yes that's the one thanks. I want to ask him what spindle he's using...Peter

    Looked at the thread its old. he just says its an air cooled chinese spindle bought on ebay....
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    Re: Milli a new composite mill kit

    Hi All- There is a fabricated steel truss mill (triangulated steel tube moving table) in the forum somewhere and I can't find it! I've looked at its videos a couple of times but when you want it you...
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    Re: Designing a new router called Brevis-HD

    Hi All - Anodiser sent engraving photo though. Looks smart. Came across this on engineering - Peter
  19. Re: Just built new router and having motor and or controller issues

    Hi MS - disconnect the motors and run them on the bench, if the action is smooth then its a mechanical issue in the build and you need to work through the mechanicals and identify the gremlin. You...
  20. Re: Just built new router and having motor and or controller issues

    Hi MS - What usteps are you using? Peter
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    Re: Designing a new router called Brevis-HD

    Hi All - Foundation parts are ready for pick-up. Shall do this Monday and start assembling wednesday - Excellent - Peter
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    Re: Milli a new composite mill kit

    Thks Mactec - I was looking at their "metal" spindle 1.5kW ER16. Would like a square body version for Milli but round is fine... There's a couple of videos on the net showing 1.5kW spindles cutting...
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    Re: Milli a new composite mill kit

    Morning All - been busy building the washroom for my workshop while waiting for Scoot the routers structural parts..... My thoughts have come back to Milli. Has anyone experience with G-Penny...
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    Re: Dust collection

    Hi Decoy- Unfortunately this sort of process can't be solved from first principles due to its complexity. The thesis spells out all the assumptions made in the maths to make the problem solvable....
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    Re: Dust collection

    Hi All - I have been struggling with the transverse velocity profile of the cyclone. I thought that the max velocity was at the cone surface. Which it isn't. The max velocity is at the interface of...
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    Re: Dust collection

    Hi Decoy - You have started me down the path of reviewing my uni stuff. There are a few theories used to design cyclones and these days you can do it with CFD as vorticity is now handled quite well....
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    Re: Dust collection

    Hi Decoy - without starting a war of words - particles hitting the wall and slowing down is a very important part of the process. Cones do erode over time so this effect can't be neglected. ...
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    Re: Dust collection

    Hi Decoy - thanks for expanding the explanation. Its difficult to explain things succinctly in this sort of forum. better to see a video. Regards Peter

    https://www.youtube.com/watch?v=LwGXu4e6T1A
  29. Thread: Urbs New Build

    by peteeng
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    Re: Urbs New Build

    Looking good jack - keep at it - Peter
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    Re: Dust collection

    Hi - Cyclones can be very simple, the longer the cone the better the extraction. Dyson have the problem of making a small extractor that can be carted around a home so they have lots of small cones....
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