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Member postings for Dullnote

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

Thread: Plugging incorrect holes
12/03/2021 12:04:42

Just had to do this yesterday, found the edge then moved in 8 mm, drilled, forgot to take the size of the edge finder into account, so 2mm out.

drilled out bigger , machined a plug for push fit , then drilled in correct place. Pleased as you can hardly see the fix, I did skim the part on the mill.

This was all steel, so my question would be, would it be advisable to push fit a new part in cast, or better to loctite. As Peter issue is with cast and mine steel

Thread: Damaged mill
21/02/2021 12:36:46

254ddfe5-935b-49aa-83bf-e3cf75e3e537.jpeg86fce06f-ac5f-48da-be4c-f74e86498c1c.jpegOkay update, back in workshop this morning, took the ring off found broken in two places, see photos.

Good news is if I remove cap at end of quill a new ring would be able to be put back in place.

I am not keen to try and purchase a new cast ring, flexing cast. So what your ideas on material to be used to construct a new ring.

I have alum, or nylon would need to buy in steel

a0163f3d-b154-4b7e-8ae6-9c502306fd2c.jpeg

20/02/2021 19:22:21

Will have a better look tomorrow, but you can see the drilling through the casting is at an angle, left no meat

Pete think you are right, if it was main casting it would not clamp up, I was just so fed up after I just stopped and came in

i don’t have a manual only the instruction came with mill

20/02/2021 18:54:07

Hi this afternoon I tightened the quill to cut a slot when I did the casting snapped.

Does this part come off, hope it does, then I could make a new unit and refit. My biggest concern is it part on the main casting/ for the head.

Not really looked too much, when it happened, came in for a coffee785a2a19-40ee-457c-97c6-dc5c303c1097.jpeg

Thread: Helping dad vertical engine
19/02/2021 17:49:37
https://youtu.be/4j-VnLrUyPc
 
Hope this link works first run of the vertical engine not pained and some bits to be completed, but its a runner

Edited By JasonB on 19/02/2021 18:22:33

Thread: Newton Tesla Electric Drives
18/02/2021 18:46:53

Hi does anyone know if this company is still trading, I have emailed twice, once direct the other through their site, no reply.

Thread: Stewart Hart's Vertical Mill Engine
13/02/2021 16:54:22
https://youtu.be/4j-VnLrUyPc
Changes to unlisted, try now
13/02/2021 16:53:13

I will have a look though it was anyone who had link

13/02/2021 16:45:35
https://youtu.be/4j-VnLrUyPc
13/02/2021 16:44:48

Hi hope this works, first run for the engine today, not completed but enough to get it alaive

Thread: Setting up mill
05/02/2021 19:04:54

Update, been working on the mill today, after shimming and torque the bolts I have the y axis at 0.02mm over 150mm, which I think is a great improvement from yesterday, worked in the x axis and over 500mm I have 0.06mm. Change my DTI to plunge type held vertical to give better results

this is with the quill clamped, so I think the will be better than my machining capabilities. Theses measurements were taken with the quill and head in low position to the table, out of interest I raised the head and extended the quill to full amount, no great deal of difference possible 0.01 added to both readings.

no doubt next time I use the mill it will shake itself out of calibration, learned a lot today, Thanks a lot for all the help and advise. I think I will use the mill and try blocking out some material for another job, see how that goes and if need revisit.

04/02/2021 19:53:46

Hi thanks very much for your comments Tony, think the best thing out of all this is to understand the limits of your equipment, shimming the column is a possibility, think I could look at how the bolts have been torque down.

if I can’t get it better what about shimming the vice when I put it on? Also if I can’t get better least I know the error and possible manage the limitations.

regarding the mill itself nothing I can do, again know the limitations of the machine.

agian thanks for help, I am just trying to get better, more accurate least to max out limitations of my machines

04/02/2021 18:21:58

Also noticed if I pull or push the head I also get 0.1mm of movement

04/02/2021 18:12:26

32f7a4cf-ff53-43b7-9904-18fe2cb2c28e.jpeg

okay could not wait until tomorrow, this is the set up and this is what I have found.

spindle locked. Zero as shown, when turned 180degrees it shows 0.1mm out,.

spindle unlocked zero as shown, 180 degrees 0.09mm so not much difference. But movement on the spindle 0.3mm

is 0.1mm over the width of the table acceptable?

04/02/2021 17:39:10

Thanks Tony, if the quill is loose can this be fixed adjusted?

04/02/2021 17:26:01

I will set up a system tomorrow to check from a collet in the spindle, and have it locked, just thinking what I can do to bridge the tee slots

04/02/2021 17:20:38

Hi when the spindle is locked there is no movement, I can check off the table, but why a difference when I lock or unlock using the same disc and not moving it?

04/02/2021 16:38:02

4cd40ad4-ae44-42c0-9067-a5ae099be38d.jpeg

Hi I spent this afternoon trying to get a better set up / understanding of my mill.

First I checked x axis witch is fine, I the wanted to check y, I put a new brake disc down , the checked y found it to be out by 0.02mm really happy. Then things started to happen.

when I zeroed my DTI buy lowering the head, started to turn the spindle it dropped by 0.3mm, this did not happen when I raised the head.

I started to look and can get 0.3mm free play in the spindle, so thinking I should tighten the spindle using the clamp at the head, great it stopped the movement, but now I have 0.08mm over 150mm swing on the y axis.

is there something else I could try and get rid of the 0.3mm on the spindle.

couple of photos to showb405c4ec-6bda-4dd5-8f53-58bd4bcaf34b.jpeg

Thread: What Did You Do Today 2021
04/02/2021 15:59:47

Okay not today but last weekend, completed ball turning device, first ball the one on the handle, think that is standard 3d638c2c-05bd-4130-b5af-875b095f3603.jpeg

Thread: Car says catalyser is blocked
21/10/2020 12:32:44

I had the same fault coming up on one of my cars, Dealer wanted over £2k to fix, I did the run at high revs, put additives in, no help.

Got an independent person to come out to the car and plug up the computer to see what the faults was

Turned out a temp sensor, £75 later fixed, he did say he was always hearing of people getting ripped off from dealers with this type of fault.

So get a independent auto electrician to have a look and see what the real fault is

.

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