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Spot the oversight

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Spot the oversight

Postby RogerS » 31 Dec 2018, 07:11

...aka cock-up

In another thread, I talked about how I went about getting some custom spindle moulder cutters made. But I cocked up. Can you see where ? PM me if you can.

To recap

This is the architrave I wished to make

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My working drawing

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Tarted up and submitted to Whitehill

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Draft cutter schematic from Whitehill

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I then suggested that they could extend the cutters (shown shaded) to avoid me having to make a third pass with a rebate cutter

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Second draft

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They missed one !

Final signed off cutter drawing

Image

Neither they nor I spotted the oversight aka cock-up which didn't become apparent until I'd finished moulding two sets of architrave :(

Can you spot it ? As I said, PM me if you can.

Not a complete disaster and not that obvious on the finished product and I doubt that anyone would notice it. It's easily fixable for the remaining 12 sets.
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Re: Spot the oversight

Postby TrimTheKing » 31 Dec 2018, 11:14

Only thing I can see, and it could just be my understanding, is that it doesn’t look like the stock is actually resting on the table in either pic, so would have the be floating or below table level.

I imagine this could be sorted by moving the cutter up/down though.
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Re: Spot the oversight

Postby TrimTheKing » 31 Dec 2018, 11:16

Or there’s no reference face to go against the fence?
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Re: Spot the oversight

Postby StevieB » 31 Dec 2018, 11:49

You have turned the timber upside down for the second cutter, but have the bevel on the wrong side of the cutter as a consequence?
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 11:59

TrimTheKing wrote:...

I imagine this could be sorted by moving the cutter up/down though.


Yes...easy enough to move the spindle up or down
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 12:01

TrimTheKing wrote:Or there’s no reference face to go against the fence?



Can you expand a little on what you mean ? If it's what I think you mean then you have touched on what turned out to be a right old BA...subsequently sorted out and so...

...heh heh...supplementary question. What was the 'right old BA' and how did I get round it ?
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 12:01

StevieB wrote:You have turned the timber upside down for the second cutter, but have the bevel on the wrong side of the cutter as a consequence?



Good suggestion but no, they thought of that when they made the cutters up.
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Re: Spot the oversight

Postby TrimTheKing » 31 Dec 2018, 12:11

RogerS wrote:
TrimTheKing wrote:Or there’s no reference face to go against the fence?



Can you expand a little on what you mean ? If it's what I think you mean then you have touched on what turned out to be a right old BA...subsequently sorted out and so...

...heh heh...supplementary question. What was the 'right old BA' and how did I get round it ?


Because the face that will go against the fence as you cut has two different ‘heights’ then I think it would be difficult to get the depth of cut right unless you ‘tallest’ rise first then had the cutter buried in a sacrificial fence.

Sorry, not sure that makes sense but I’m struggling to articulate what makes sense in my minds eye.
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 13:53

TrimTheKing wrote:
RogerS wrote:
TrimTheKing wrote:Or there’s no reference face to go against the fence?



Can you expand a little on what you mean ? If it's what I think you mean then you have touched on what turned out to be a right old BA...subsequently sorted out and so...

...heh heh...supplementary question. What was the 'right old BA' and how did I get round it ?


Because the face that will go against the fence as you cut has two different ‘heights’ then I think it would be difficult to get the depth of cut right unless you ‘tallest’ rise first then had the cutter buried in a sacrificial fence.

Sorry, not sure that makes sense but I’m struggling to articulate what makes sense in my minds eye.


No, you are bang on the money there and that's the first part answer to the supplementary.

I'll post up a photo later of how I got round it if no-one comes up with the answer.

Still looking for the 'answer' to the cock-up :)
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Re: Spot the oversight

Postby Dave R » 31 Dec 2018, 15:00

Roger, did you add a rail on the fence right above the second cutter? Maybe like this?

Image

With a high-mounted featherboard or feeder applying pressure on the top half of the stock, it should work fine.
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 15:46

Dave R wrote:Roger, did you add a rail on the fence right above the second cutter? Maybe like this?

Image

With a high-mounted featherboard or feeder applying pressure on the top half of the stock, it should work fine.


Very nice drawing, Dave :)

You're very close. But maybe put that 'featherboard' somewhere else ?
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Re: Spot the oversight

Postby Dave R » 31 Dec 2018, 16:10

RogerS wrote:But maybe put that 'featherboard' somewhere else ?


Are you implying something? :lol:

Feather board on top and power feeder in front of the work?
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 16:35

Dave R wrote:
RogerS wrote:But maybe put that 'featherboard' somewhere else ?


Are you implying something? :lol:

Feather board on top and power feeder in front of the work?


No. 'fraid not.
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Re: Spot the oversight

Postby Dave R » 31 Dec 2018, 16:55

You bought a new machine that would mill the entire moulding in one pass.
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Re: Spot the oversight

Postby RogerS » 31 Dec 2018, 17:59

Dave R wrote:You bought a new machine that would mill the entire moulding in one pass.


LOL...I'm not made of money !
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Re: Spot the oversight

Postby Dave R » 01 Jan 2019, 15:04

I thought you might by on time. :D

How about leaving the stock a bit over width and raising the second cutter above the top of the table so you leave some material under it?

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Re: Spot the oversight

Postby RogerS » 01 Jan 2019, 16:09

Dave R wrote:I thought you might by on time. :D

How about leaving the stock a bit over width and raising the second cutter above the top of the table so you leave some material under it?

HNY



HNY to you to.

Got it in one..actually make it wider on both sides. Here's a taster as I'm doing a long WIP and don't want to lose my thunder !

Image
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Re: Spot the oversight

Postby Dave R » 01 Jan 2019, 16:10

Very good.
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