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Member postings for FlyinFlynn

Here is a list of all the postings FlyinFlynn has made in our forums. Click on a thread name to jump to the thread.

Thread: Import and VAT
11/09/2020 10:46:08
Posted by Stuart C on 11/09/2020 00:06:27:

Ball bearings from the USA are also subject to 8% import duty. Gets pretty close to your £12.00

According to https://www.gov.uk/goods-sent-from-abroad/tax-and-duty import duty is only applied on items in excess of £135

Thread: Researching the ancient Ripmax Futaba M6
09/09/2020 10:27:07

You might want to email Phil Green . Phil and Shaun run a museum of vintage radios and have an immaculate M6 in its box. I am sure they will be a mine of information for you.

Edited By FlyinFlynn on 09/09/2020 10:27:34

 

opps ...too late!

Edited By FlyinFlynn on 09/09/2020 10:28:18

Thread: Foaming tank
18/08/2020 10:15:18

I think you will find the foaming is purely down to the vibration, loosen the packing around the tank until it stops foaming and leave it at that. fit a felt clunk anyway as additional filtering is never a bad thing. I believe some people have added a few drops of washing up liquid to the fuel in the past to reduce the fuels surface tension to help reduce foaming but I do not know if that is a good idea or not.

Thread: LMC Gnatty
16/08/2020 12:38:03

I learnt to fly with a Gnatty..it was quite stable and forgiving, I eventually retired it after upgrading the engine from an OS 40fp to an SC45 (IIRC) in an effort to counteract it's burgeoning weight due to my lack of fibre glassing skills whenever the inevitable mishaps occurred....happy days, long ago!

Thread: LED wiring
11/08/2020 10:15:12

So Z, exactly which LED's did you buy? The complete answer to that question will probably illicit the correct response from the gathered intelligentsia.

Thread: free laser/router rib software
10/08/2020 18:08:04

Easel is a web based cad/cam package that has a rib design app that allows you to specify root and tip chords along with number of ribs for about 20 profiles and import them into the CAD software for manipulation before converting to gcode and sending through the serial port to any cnc controller running GRBL.......and it is FREE.

Primarily meant for cnc router but works for a laser too.

you do have to register though

Thread: LED wiring
10/08/2020 10:41:00

"So these leds have inbuilt resistors, presumably they are the 5v ones."

My guess would be they are 12v ones....I don't think a 5v LED would last long connected across a fully charged 3S Lipo, and a 12v LED across 3.7v would still illuminate

Thread: Banggood Delivery Times
28/07/2020 11:37:17

Most of the delays I experience from goods arriving from China happen once the goods have touched down in my country. I often surmise that as the local post office receive no payment for delivery of imported goods they are routed on a 'as and when space is available' basis...sometimes taking a full month to travel across the country.

As an example I recently ordered two sets of two stepper motors from the same supplier two days apart ( to reduce the chance of import duty as the shipping was included in the item's price), the second set arrived a full 5 weeks before the first set, not the fault of the supplier, or the foreign shippers as, according to the shipping info, both landed in country within 4 days of each other....

Thread: Cheap Chinese Laser Cutter
22/06/2020 10:55:30

Try the bottom of page 6 of this thread.

Edited By FlyinFlynn on 22/06/2020 10:56:07

Thread: MVVS 40 Petrol - IGN Question
16/06/2020 10:18:46

I dunno Brian, but surely the simplest solution is to try it with a series resistor first...say a 1K to limit any current flow to ~5mA (assuming a 4v8 power supply) and if it lights and is too dim try it with out the resistor....Of course, there may be a reason it came without the LED wink

Edited By FlyinFlynn on 16/06/2020 10:20:00

Thread: Laser cutting
02/06/2020 12:12:57

As far as cnc router kits for the 3D Printerless goes there are many offerings from the usual Chinese suppliers....but beware of going for the cheaper ones. When you start introducing a load on the gantry, like when you are routing as opposed to just lugging a laser head around, you will need bigger, more powerful stepper motors, only the biggest of the NEMA17's are powerful enough to be *sure* you are not going to lose steps, you really need to be looking at NEMA24's, which means bigger discrete stepper motor drivers too. All that starts to add up! If you are going to be happy with very low feed rates in very soft materials then Geoff's solution will work, I also have the same setup. Also beware of the small 'PCB routers' with a mabuchi 550 motor and a tiny working bed size, they are really only good for PCB making.

Much like buying a K40 over a eleksmaker LED 3.5W laser, you have to spend the cash to get something with sufficient capabilities to satisfy your needs - both now and in the future.

05/05/2020 11:24:32

And THIS one Wayne

Thread: Amazon UK
05/05/2020 11:18:11

Can't help with Amazon policies I'm afraid as I don't find Amazon competitive price wise. I will however make the comment that it is not the responsibility of the Chinese EXPORTER to ensure the correct duty is paid, it is the responsibility of you, the IMPORTER, to do so, this is perhaps why the Chinese are so willing to print whatever they think will help sell the item on the shipping label.

If you want to ensure you do pay the correct amount of duty I suggest you have the item shipped by DHL or FedEx or another company that specialises in international freight forwarding as they have the procedures in place to make the payment of taxes routine, unlike the postal services.

Thread: Home Made CNC/Laser Cutter
02/05/2020 08:45:50

My 2p's worth.....

That depends mainly on the power of the laser. For a 3.5 Watt laser you should expect a cut of around 1mm per pass in soft/medium balsa, with a maximum total cut of around 6 mm, after that the cut gets too charred and V'd. With hard balsa the cut will be much less and with ply almost non-existent. Your best option with ply will be to use the laser to accurately mark the wood for cutting out on a bandsaw. (Or use your dremel router)

A 5 Watt laser will do marginally better, but not in proportion to the cost of the laser module and a 15 Watt LED laser just isn't 15 Watts!..they are using the input power as the rating, not the output power. For something with a bit more power you will be looking at a CO2 laser

A 40 Watt CO2 laser will happily cut 6mm ply all day long.

I would have thought you could also use a 3.5 Watt laser to cut vinyl. I have successfully cut out solarfilm without welding the backing sheet to the film

Thread: 1S Wattmeter
28/04/2020 13:01:15
Posted by Chris Bott - Moderator on 26/04/2020 12:31:55:

Hi FF, that's as expected. Then click the download button.

Ah, is that when you get the download error message?

Edited By Chris Bott - Moderator on 26/04/2020 12:32:40

Yes..after pressing the download button it asks 'direct download' or 'save to my dropbox' and as I don't have a dropbox I clicked on direct download and then got the error message.....but I have just tried it again and it works OK now...Problem solved.

Thread: Cheap Chinese Laser Cutter
26/04/2020 11:46:00

Can't really help with settings for harder woods Jason, but I think it will all come down to how much energy you can get focused onto the cut line. Perhaps an air pump clearing away any smoke will have tangible benefits, getting a proper focus will help too.

If 3.5Watts isn't going to do the business perhaps the best solution is just using the laser to accurately mark the wood for cutting out on a band saw ( or Stanley knife in the case of the really thin ply)

Thread: 1S Wattmeter
26/04/2020 11:37:12

I get this Chris

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Thread: Cheap Chinese Laser Cutter
22/04/2020 17:30:16

Thanks Barrie but I am reasonably familiar with what a post processor does and how to make one, I have written a couple for my machines when using a predominantly cnc spindle CAD/CAM software without 'proper' laser support.

To my mind making multiple passes to vary the burn when laser engraving is only done in the Preditor suite because it uses exactly the same process for cnc spindle engraving, so you may see cnc spindle and laser processes as the same, however it is not be most elegant solution as you will need multiple passes and will possibly still get burns in the corners as the laser carriage is stationary and the laser is delivering its energy onto one spot on the workpiece.
It may be that a CO2 laser can spend less time stationary at a corner due to the lower mass on the carriage, but as we are talking low power laser modules here the problem is very pronounced.

So the long and the short of it is you are talking about a totally different animal, cnc milling for the (semi) professional where the software writers are not going to materially re-write their software for the 'maker' laser community and will just write a PP to deal with the worst problems that running a laser instead of a mill brings.

GRBL, which is specifically aimed at the 'maker' community and not at the (semi) professional community, deals with laser operations in a different way to the cnc milling environment. The CAD/CAM software I sometimes use, Vetric Aspire, was developed purely with cnc milling in mind, with only a recent nod to laser operations by the users publishing a PP for laser use - that too is a fudge to get your .nc processed.

It may not fit your workflow but I suspect LightBurn would do a 'better' job, with laser specific functions, than your milling software could achieve, and it is a lot easier to get your head around.

Thread: 1S Wattmeter
22/04/2020 09:17:15

Chris..I went looking for ASC712 modules.. I assume you meant ACS712.... Dyslexia rules K.O.

I would stick with 3v3 or 3v0 for the backlight...it gets hard to read if the LED fails.....

Thread: Cheap Chinese Laser Cutter
22/04/2020 08:56:20
Posted by Jason Channing on 21/04/2020 21:21:38:

I dont know where to start.

Jason - there is no 'best' software, only personal preferences. You can think of software for producing ribs, formers and stuff as being divided into two camps, CAD and CAM. The CAM part is quite easy to come by and eleksmaker does an OK job at that but CAD is a different story. Eleksmaker is very limiting and Lightburn is more complicated but much more functional in that regard. There are others, but any CAD software worth its salt will not be free, at least I haven't found one, and it will probably be more complicated than Lightburn because Lightburn is written specifically for laser work whereas other CAD software will be more router based. Many functions for cnc routing are not required for laser work.

So if you are finding Lightburn too complicated I suggest you keep trying to understand what the options do in Lightburn until the free trial period expires and then make a decision. There is a manual for Lightburn here.

I use Vectric Aspire, 123DDesign, LibreCAD, Deskproto, LaserGRBL and yes Lightburn..... until I was required to pay for it!

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