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I finally finished my 3D printer and found that the steps/mm for the extruder was a bit course, so I designed a 10:1 reduction gearbox using CamBam's Hypocycloid generator.

Here is a small lathe I made during my time at the dockyard unfortunately it was for one of the foreman that worked their. He was into N guage trains and wanted to start making his own parts, I only had about 4 month to make it before we were made redundant. It was in Model Engineer Vol 151...

I found my old tacho in the shed and opened it up. It would need a gear reduction to get the correct rpm as I can turn it by hand and spin it up to 3000 rpm.

Mach3 3D printer Add-on This site is worth a look to get a few ideas https://cnc2printer3d.wordpress.com/software/

Question- Are you trying the cut a M3 thread on a 1/8" (3.175mm) Diameter shaft? The shaft diameter should be a maximum of 3mm if not 0.1-0.2 mm smaller.

Hi Ethan Here is the NSW agent for sherline I think they are around the Hornsby area. http://lathesonline.com.au/webstore/index.php?main_page=index&cPath=1_2_3 Cheers Paul

Hi A pitch of 3mm will give you a module of 0.954 Module 3 will have a pitch of 9.42mm with a depth of 10.23 mm pitch = Pi (3.146) x module http://www.helicron.net/workshop/gearcutting/involute-gears/

I have just taken delivery of a Rong Fu S5 Smart Mill from Stuart at Titan Machinery and I must say it is a well built machine.I know Stuart gives the factory feedback on how they can improved the machines and if it is crap he will tell you. The lathe looks to be of the same quality so I think...

Hi I just read this via https://www.facebook.com/pages/Australian-Model-Engineering-Magazine/262194183838462?hc_location=timeline We have just been informed that the 12th Annual Model Engineering Exhibition scheduled for 4 to 5 October at the Monash University Engineering Hall has been...

2014 Model Engineering Exhibition 4 - 5 October 12th Melbourne Model Engineering Exhibition Engineering Hall, Monash University, Wellington Road, Clayton. Saturday 4 October 9.00am - 5.00pm Sunday 5 October 9.00am - 4.00pm The 12th biennial exhibition by local clubs with exhibits...

Hi Adam Greetings from Western Sydney

http://www.epicinter.net/a-solenoid-powered-v8-hobby-engine-this-is-cool/

Their is a nice cnc cam grinding program @ http://gcam.lucasemail.org/ It maybe worth a play with. Paul

It looks like the engine castings for a Westbury Sealion

On the top scale you go along until you see two line that are inline which happens to be .012 So you add 2 + .7 + .05 + .012 = 2.762

Hi from western Sydney Do you race your tether car at SSME? Paul

Here is my tool grinding attachment I made for my stent T&C grinder. I have nearly finished the adaptor for holding round stock eg endmill, slotdrills, dee bits. Cheers Paul

Hi Tinkerer I'm at Rooty Hill

I filled mind up with devcon (metal putty) and then machined it.

I knocked up grinding spindle and tried it out Mechanically I have found that my grinding spindle motor needs more hp a 100W is not enough. A few things that I though may be helpful - 1-Linear moves:- To allow cutting the full width of a cam when using a narrow grinding wheel or ballnose...