JohnGi

You might find this thread useful. It provides a solution which is cheaper than NCE's proprietary unit (works on same principle), and adds a buzzer.

There are a couple of relevant videos in the above linked thread.

Hi, I have a second hand Roland MDX-15 mill. which I've modified with a slightly more powerful motor, and a speed controller letting me run it up to 18,000 rpm. Recently I've been making parts for buildings, using Palight (closed cell PVC foam aka foamex) for walls, and styrene for details such as windows and doors. I find that the problem of melting the styrene is less if you use single flute cutters which are sold for cutting acrylic and other plastics. Less flutes add less heat to the work, and there is more clearance for removing chips quickly. Single flute cutters of less that 1mm can be obtained from CNC Plus in Germany https://cnc-plus.de/ Sizes 1 mm and up can be got in UK from Rennie Tools https://www.rennietool.co.uk (also on ebay), or from Highland Slate Workshop (ebay only AFAIK).

I recently bought a 2 inch engineers square from Faithfull which is a lot thinner than the one I got (from Squires?) several years ago.

Hi, It seems from your post that you are moderately experienced with fusion 360, and as you have identified a fluting shape which works, and one which doesn't, it looks very much like a bug in the software. I would report it on their forum, I don't think they are prejudiced against "hobby" users as long as you are asking sensible questions. Rgds John

There are a lot of these on ebay at the moment. Search for "used halogen transformer". Those that I saw are all labelled 11.6V 4.9A AC.

Runout of the spindle and cutter can also be a problem with small cutters - it can cause some flutes to take bigger cuts than others. Usually measured with a dial indicator. If you don't have one you could measure it indirectly with a vernier caliper by comparing the width of a slot with its nominal width. You would need to make sure that the tool path you use for this eliminates any backlash, and perhaps take spring passes to eliminate cutter deflection as much as possible. I use fusion 360 to create my tool paths on my small mill. One of the most useful features is the option to slow the cutter as it approaches and exits corners. This avoids breakages where the small cutter is flexing somewhat, lagging behind its proper position, and then suddenly turning through 90 degrees. I expect other tool path generators might have a similar option.

Hi, Also see two videos by quarryscapes in this thread John

Hi, A couple of files are attached. The 7mm association book seems to have the same drawing (by J.A.N. Emslie) as that posted above, but I included it anyway as there was a photo of one of the engines, and some words by David Lloyd. By the way I think Alphagraphix do a card kit for a Cavan and Leitrim station, possibly Ballinamore (F504). Hope this helps. John IrishNGDwg10.pdf BackwoodsInstructions.pdf

Just to add Neville posted this to the yahoo group on June 8 So he is active, although his website may not have been updated yet. John

Hi, I have an unfinished Backwoods kit. I can probably scan the instructions and send you them tomorrow. Also the drawing in the 7mm book, unless that's the same as the drawing already uploaded above by John Archer. You may want to join the Irish NG groups on yahoo groups - they have a horrible UI but several of the well known Irish modellers are there. https://groups.yahoo.com/neo/groups/00n3_modellers/info https://groups.yahoo.com/neo/groups/irish_three_foot/info (including Neville, the current owner of the Backwoods 00n3 range) Hope this helps. John

Hi, I enjoyed reading the article in BRM, particularly as I live in North Kent. We used to have lunchtime drinks at a different North Foreland pub. It was in the High Street between Chatham and Rochester. It's closed now. John

There is a good explanation of how anti-aliasing works in this thread on ngrm http://ngrm-online.com/forums/index.php?/topic/23532-anycubic-photon-users-group/&page=3 See post about half way down on page 3 by Mark Greenword (greenwoodma). The video he links to is also very good. John

On this 1856 map Gillingham is centred around St Mary's Church, and is larger than New Brompton. On the 1869 map New Brompton is larger than Gillingham. The railway station would be at the southern edge of the of orchards? between the two places. The football team also used to be called New Brompton - the changed their name in 1912. PS rather unusually this map shows Chatham dockyard rather than leaving a blank space.

Nearholmer, Thanks for reply, I see exactly what you mean. Here is a google satellite view. I see a tarmac area with parked cars on the line of the tunnel breaking the line of the streets and houses - this is Medway Used Vans - which fits in with what you said about sterilised land. Further south on a similar, but slightly different, alignment there is a row of lock up garages, a social club, and an diagonal alley way which continues as far as Marlborough Road. Here is 1898 OS map. Here is 1907. They're starting to build houses over the tunnel in Marlborough Road and College Avenue - the air shaft is in someone's back garden.