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Member postings for blowlamp

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

Thread: For the latest in PC fashion! (Anyone here with a Master's Degree?)
28/10/2020 19:17:13
Posted by Bazyle on 28/10/2020 18:27:05:
Posted by blowlamp on 28/10/2020 10:45:09:

Does anyone know the names of the different races?


Ball, roller, thrust......

Thanks for that... I only knew about the egg & spoon, three legged and wheelbarrow!

28/10/2020 11:23:17

If it gathers pace then Jaeger-LeCoultre will need to change their range.

28/10/2020 10:45:09

Does anyone know the names of the different races?


Thread: .DXF Files for Meccano Chain Wheels
27/10/2020 13:23:17

A way to find the centre for the tooth flank radius of 0.125".


25/10/2020 12:36:51

Here's mine in MoI.



Thread: DRO errors, or are they??
25/10/2020 10:37:00

If the unlocked cross slide was moving whilst taking a cut, I would expect the DRO reading to fluctuate too.


25/10/2020 10:21:57

If you ignore the DRO and only use the cross slide dial, do you then get repeatable diameters that match the cut you have applied?


Thread: Why is this guys mini lathe parting off so well?
22/10/2020 12:59:03

The trick to parting-off is to get the chips out of the groove so they don't pile up and cause a jam. Use whatever means available to do that and parting becomes less of a scare. I think the 'be brave with the infeed' advice works because it usually results in long swarf being created that naturally clears from the slot.


Thread: Mini metro turns 40
21/10/2020 10:26:34

I'm not driving a Mini Metro.

Thread: ECAM v4 Lathe & Mill
20/10/2020 18:19:14

Hi Ian.

We don't want anything intimidating in the videos, so please let me know which parts are unclear and I'll try to make things better in future videos.

Ecam does do 2D+2.5D and is good for much of the work I encounter, whereas our moderator JasonB seems to use 3D CAM quite often. However, I'm sure you'd find Ecam useful to learn if you get into CNC at some point.


Thread: Alternative to PC based Cnc controllers
20/10/2020 13:01:45
Posted by Phill Spowart on 20/10/2020 11:57:23:

Forgot to say-I'm running a Mk3/4 board. Other than the CSS/FPR issue, I'm really pleased with it.

You'll certainly have an issue if you haven't got the spindle synchronisation working properly.

20/10/2020 11:52:39

There is this, but I don't know if it works with TNG2. This SD adapter card was used to allow the CNC machine to run gcode with minimal computer equipment, I think.


Thread: Reverse Engineering [using FreeCAD]
20/10/2020 11:33:46

As a quick starting point, I'd measure the width and height of the part with my calipers and use those dimensions to make an accurate bounding box in my CAD system. That would help give access to hole centres and provide reference lines to work from.


Thread: Alternative to PC based Cnc controllers
20/10/2020 11:14:02
Posted by Phill Spowart on 20/10/2020 10:35:24:

If it is of any use to anyone, I've rebuilt a boxford TCL with PlanetCNC stuff. It's not bad for the price. The cost of all the electronics, including two steppers and two power supplies, was £655. You still need to plug it into a PC through the USB port to set up, but I think you can get it running off a flash drive of some kind. Support is excellent. Only drawbacks so far are that it doesn't support constant surface speed or feed per rev for turning, which is a shame. I'm also struggling to get the spindle speed feedback loop to work.



I'm fairly confident that feed per rev works (I use feed per min) and I am certain the spindle feedback loop works as I have a rock solid tachometer reading as well as being able to screwcut with G76 and G33.

My PlanetCNC controller isn't set up to vary spindle speed so I don't know if G96 is operational, althought the Gcode manual indicates that it is. Other (currently) non-functioning gcodes have TODO after their description.

Are you setup with an up to date version of PlanetCNC TNG2 software/firmware?





Edited By blowlamp on 20/10/2020 11:17:42

Edited By blowlamp on 20/10/2020 11:25:16

Thread: ECAM v4 Lathe & Mill
19/10/2020 15:38:36

Facing stock with Ecam.


19/10/2020 12:20:08

I'll do you a video soon to help you along.


Thread: Drop on recoil escapement
16/10/2020 19:53:30

Just for interest, I recorded a video of a recoil escapement generated in Gearotic with various drop angles.


Thread: In flight social distancing
16/10/2020 17:37:37
Posted by Michael Gilligan on 16/10/2020 16:41:57:

Just found this ... New Improved, etc. **LINK**

This one claims 99.99% instead of the more usual 99.97% but I still don’t really understand what the number means

dont know ... by weight, by volume, by number ... ?

Covid 19 virus is very small, so this point of clarification is important.


It seems to me to say that their filter captures particulates that might be carrying pathogens/viruses.

The girl in their picture appears to have a few 'larger than virus size' gaps around her mask though. surprise


16/10/2020 10:08:58

Just a bit of info from the UK Government website.

Stay safe, be kind. hug 2hug

cv19 report.jpg

Thread: guideway surfaces regrind
13/10/2020 22:08:07

Have you considered lapping the surfaces?

Mill some copper/aluminium to 90 degrees, charge it with abrasive paste and give it a go is what I'd try first.


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