• Scam Alert. Members are reminded to NOT send money to buy anything. Don't buy things remote and have it shipped - go get it yourself, pay in person, and take your equipment with you. Scammers have burned people on this forum. Urgency, secrecy, excuses, selling for friend, newish members, FUD, are RED FLAGS. A video conference call is not adequate assurance. Face to face interactions are required. Please report suspicions to the forum admins. Stay Safe - anyone can get scammed.
  • Several Regions have held meetups already, but others are being planned or are evaluating the interest. The Ontario GTA West area meetup is planned for Saturday April 26th at Greasemonkeys shop in Aylmer Ontario. If you are interested and haven’t signed up yet, click here! Arbutus has also explored interest in a Fraser Valley meetup but it seems members either missed his thread or had other plans. Let him know if you are interested in a meetup later in the year by posting here! Slowpoke is trying to pull together an Ottawa area meetup later this summer. No date has been selected yet, so let him know if you are interested here! We are not aware of any other meetups being planned this year. If you are interested in doing something in your area, let everyone know and make it happen! Meetups are a great way to make new machining friends and get hands on help in your area. Don’t be shy, sign up and come, or plan your own meetup!

Recent content by PeterT

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    Tips/Techniques Show your shop related 3DP

    The collet block is not held down. You gently push it inward to the fence for contact & slide it down until it grinds a bit off & reaches the foot stop. It is admittedly primitive but this allows you to flip the block & grind the other side to the exact same compound angle repeat For each...
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    Tips/Techniques Show your shop related 3DP

    I've been comparing heat set inserts with pressed in hex nuts & I'm starting to go hex more & more. More for simplicity & nuts are just common stock vs dragging out the iron. I know some guys use those insert irons in a drill press type gadget which probably eliminate some of the variables. The...
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    Tips/Techniques Show your shop related 3DP

    I made a similar slide plate for my TCG but its a bit of a rigmarole to set up the compound angles. I wanted to see what I could get away with with 3DP assembly & my bench grinder. The drill is held in a 5C collet block, advance into the wheel along fence up to the finger stop. Flip 180-deg &...
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    JCDammeyer's 42 projects

    What did you paint it with & do you have any prior experience how the PLA is holding up?
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    Small Injector Pumps

    It doesn't surprise me to see industrial equipment with those specs, but as soon as you see 4 zero's in front of the 1 that is getting into lab grade metrology & all that that entails. A couple of degrees intemp variation will account for that kind of dimension, either in your shop but maybe...
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    Filtering funnel

    Designing something in CAD doesn't necessarily mean its awesome - a very famous guy on CHMW :cool:
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    Filtering funnel

    You are absolutely right, never noticed that before. I guess 'pour over' is the proper term, Melitta is just a brand. I have made a few kitchen gadgets & these filter holders might qualify for a better mouse trap. But it would have to be hand washed, I don't think PLA would survive the...
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    Filtering funnel

    I don't understand the design - the big holes in the inner shell. Maybe if it was intended to support a disposable filter medium like a Melita coffee maker? This is a thing in flow lines (called witches hats) but usually in funnels its a sized screen at the bottom of the funnel. If the holes are...
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    Zenair CH601HD

    Steady progress. How to you spot check your center of gravity & weight as you are doing the build?
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    Machinery's 20th

    I think the major diameter of external thread will be the same 0.250" regardless of pitch. The minor diameter & pitch diameter is different.
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    Machinery's 20th

    Well I assume you make a 55-deg HSS tool with the proper nose radius similar to a conventional 60-deg thread. - you have the pitch setting on your lathe - I pasted a Gemini response calculating diameters to the custom pitch - link shows Whitworth specific wire diameters to measure PD (unless you...
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    Machinery's 20th

    I less familiar with Whitworth but is 1/4-22 even a standard thread? I see 1/4-20 (BSW) and 1/4-26 (BSF) and G1/4 BSPP (Whitworth pipe thread) = 19TPI. I mean theoretically you can make any thread form to match some specialty fastener situation if you know the underling formulas, but there seem...
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    CA-ON Small Fasteners

    These are good ideas. Am I understanding correct? Red = stock diameter. Yellow = reduced diameter. The SHCS are kind of fine tuning traveling steady's? I guess it would pretty much be a single pass operation but that should be perfectly fine for screws where the head is not appreciably bigger...
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    CA-ON Small Fasteners

    Thanks, good to know. It kind of smells like a vendor specific choice unfortunately. Or put it this way, I'm still getting other (RC) hobby hardware from UK supplier no problem, arguably more potential customs hair on it than teeny bolts. Probably not a good time to order anything if its coming...
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    Shop Has Anyone Used...?

    We have discussed this quite a bit in the past but the probably strewn about various posts. The answer is it really depends on the shape of part you are holding & what kind of machining forces are occurring. You can readily stick a thin plate down (high surface area relative to low stick out)...
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