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SnakeyJ

Advanced Members
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SnakeyJ last won the day on December 1 2015

SnakeyJ had the most liked content!

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About SnakeyJ

  • Rank
    Red Dwarf

Contact Methods

  • Website URL
    http://www.dataswift.co.uk

Profile Information

  • Gender
    Male
  • Interests
    Family, business, boats, fishing, rockets and astronomy - in no particular order
  • Location
    Isle of Wight
  1. SnakeyJ

    Better Planetary Cam?

    I'm another vote for the 224MC, which has provided excellent some excellent results when I've had the chance to get out! The camera delivers high frame rates, even at F20 on my 10" OO (TV 3x barlow with some extension), commonly over 120fps on 640x480 ROI. The camera's sensitivity has been a big step up from my previous QHY5LII mono (ASI120MM equiv) and much less fuss with the processing - though worth stressing that best results do require the ADC (particularly for planetary imaging from UK Latitudes). A capture laptop with USB3 and a decent SSD drive can also bump the price up if you don't already have them.
  2. SnakeyJ

    Plato Animation 3d

    Love that Neil - how wonderful to literally fly over the lunar surface like this! The enhanced relief adds new understanding to the structure and wide variation in the lunar surface. Any chance you can post up the original source image for comparison with the video?
  3. SnakeyJ

    Colchester Bantam Lathe - stressful morning

    This saddens me too, it would be nice to see some real production behind British badged brands, even if we outsourced the castings and heavier production. The global economy has all but killed off UK production. At least I know my Mk1 Bantam is 100% British built and powered by Brook's Motors of Huddersfield. It may be old and worn, but will certainly see me out Oddly enough a Dalian lathe did come up for sale locally - it looked well equipped and not a lot of money, but rather too big for my workshop and I'm not keen on another hernia!
  4. SnakeyJ

    Colchester Bantam Lathe - stressful morning

    Forgot the photos this morning, but a much better run at machining a test bar yesterday. I was running this on 20mm black mild steel bar, so a little lumpy and naturally some chatter at 7" out from the chuck, but the results were considerably better and I was able to get a reasonable first pass on this. Still measuring in metric with the micrometer, but I machined to 19.25mm at 20mm from the chuck jaws and ran out to 19.30mm at 150mm (170mm from chuck). Quite a taper, but heading in the right direction. I should be able to resolve this with precision levelling of the bed and tweaks to the head alignment. I will do the subsequent test cuts with a taper mounted collet chuck, which should give much more accurate alignment and see if I can source some truer bright steel bar stock.
  5. SnakeyJ

    Colchester Bantam Lathe - stressful morning

    Hi Noah - I was posted with HQ 19 Infantry Bde, Goojerat Baracks, Colchester myself between '88-90 courtesy of the Army. Without doubt the best and friendliest garrison town in UK and many fond memories of the town and surrounding area. My only claim to fame would be entertaining and photographing Atkinson, Fry, Laurie and Robinson with the band of the 3 Royal Anglian, when they filmed the title sequence for Black Adder Goes Forth - Stephen Fry, Tony Robinson and Hugh Laurie were great fun, but Rowan Atkinson was very aloof and withdrawn. Genius together as they played off each other as they seemed to make the gags up as they went along. Colchester Machine Tools are still very much up and running and producing/exporting quite a lot of machine tools - Looks like they are mostly CNC driven now, but they still sell the traditional centre lathes Student and Master models - bet they cost a fair few shillings though. I think the move to Yorkshire was part of the rationalisation of Harrison and Colchester under 600 Group Plc, both brands are still produced. It's good to see that England is still producing and exporting some machine tools!
  6. SnakeyJ

    Colchester Bantam Lathe - stressful morning

    Thanks Gina and Damian - definitely getting there. I've just lashed out on a proper 0.0001" dial test indicator Mitutoyo so should be able to get the bearings properly adjusted and then complete the levelling and alignment. This engineering kit is almost as expensive as the astro toys - Hopefully I can turn a few projects out rather than just making piles of swarf and getting oil everywhere!
  7. SnakeyJ

    Colchester Bantam Lathe - stressful morning

    I spent most of the night stressing over this, but finally decided it must be the spindle bearings that had worked loose. The manual says these should be tightened so the end float is 1/10000" or 0.00254mm measured on the face of a flat centre in the spindle nose and 'the spindle remains free to turn by hand' Rather subjective, but I checked mine and I was reading around 0.05mm on my cheap Chinese dial indicator, or 20x the specification. I've decided to tighten the bearing up to 0.01mm making sure that it still had a good free spin on the spindle. I then cautiously ran the lathe up through the gears to it's max 1600rpm - much quieter now and the eccentricity seems to have been largely removed. I will borrow a proper dial indicator to double check this during the week, but the surfacing looks much better on a piece of bar stock, certainly sufficient for my needs and I will have another go at sorting out the head alignment. properly.
  8. 've been using my lathe a little of late, but was worrying this week as I was starting to see more chatter and some very poor finishes. I decided to check alignment and brought a 10" length of 1" steel bar home as a test piece on Friday night. The idea was to take a light surface cut over 6" and then mic this up to confirm any run out. However the results were dire and very noisy as I moved further from the headstock. I put a clean piece in and ran a dial indicator along the saddle - it was way out. Having slept on it I decided to properly inspect the head today and stripped it down It all looked clean and well lubed inside, but then I decided to put a centre in check this - Houston we have a serious problem... VID_20181020_121908.mp4 At this point the panic was setting in - I reread the manual and did a quick Google and decided to check the bearings. Apparently these Gamet bearings are seriously expensive £6-700 + vat for the pair! A cup of coffee and a think - how can it be so bad? There's no obvious play in the bearings or spindle. It has to be the centre? I decided indicate the spindle nose. VID_20181020_124716.mp4 Not amazing, but at least it's back in the right ball park. Now I always wipe a Morse taper out before use and I've now given this a proper clean out, but still seeing a big alignment error 0.3-0.4mm with this center. I get about half the error with another center that also came with the lathe. I'm guessing that I have some damage to the spindle taper and may need to hone this out to remove any high spot's. But is it actually possible to bend a center? Sorry, excuse the duplicate video at below - unable to edit this out having started the post on my phone! VID_20181020_121908.mp4
  9. I purchased this here 12 months ago from AstroMick, but have not had the opportunity to use at all. Excellent condition and boxed, c/w original software CD, spare desiccant tablets, plug, mains PSU, cigar lighter socket and USB2 cable. Full specification at https://www.firstlightoptics.com/atik-cameras/atik_414ex.html £ 650 inclusive of UK postage. Payment paypal (+fees) or bank transfer.
  10. solar and batteries looks good unless you wanted to run anything heavy like a dehumidifier - and even the no damp/bucket route looks quite useful.
  11. SnakeyJ

    Recommended Materials for Newt End Caps

    I should say I do have soft shower cap type covers for both - proper astrotech ones, but the elastic fails over time and they invariably fall off. Very good for keeping dust off while allowing the damp flocking to dry out though.
  12. SnakeyJ

    Recommended Materials for Newt End Caps

    Ah now the ply is an excellent suggestion and I like the idea of the drawer knob as a handle, perhaps if I steam it I can also bend it around the radius of the OTA - it will certainly be cheap, easy to cut and should bond well with Gorilla glue - I will knock up a steam box/bag and have a quick play.
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