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Kitchen Fitting

Worktop jig conundrum!!!

Anonymous user 23/02/2024 - 3.27 PM

I bought a standard 900 mm worktop jig from worktop express which came with the positioning pins but I had to buy the 30 mm router bush and 12.7 x 50 mm router bit. I followed the instructions carefully then ended up with a male end with too tight a turn to fit into the female inset which was itself wider than the (by about 10 mm) then the male ended worktop Looking at the jig to see where I had gone so horribly wrong with my nice expensive solid oak top it struck me that I cannot possibly cut matching curves with a 12.7mm bit running down the centre of the router channel. At the bend, unless the router bit has zero thickness the inside edge will ALWAYS have a tighter curve than the outside. As 1) there is only one jig for both the female and male sides of the join (meaning both CANNOT be cut by the same side of the router bit) and 2) according to the instructions the bit will always travel down the centre of the guide I am at a loss to understand how to use this jig. I even watched youtube videos and apart from actually measuring out the cut line, offsetting for the bush etc instead of blindly following instructions, they did the same things as me. Clearly then I am at fault but I cannot get my head round it…..can someone please explain where my thinking is wrong!! How can I cut the same male and female radius at the bend without offsetting the router bit???????

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4 Answers

Roger Tyler

Rating: 5 out of 5
Crawley
The pins on the female should locate the jig onto the worktop without the need to measure anything. Where you mark the male joint you should measure 9mm back which allows for the guide bush,and this should cut to the line perfectly. Hope this helps
Answered2 October 2019
4

Savannah Building Services

Rating: 5 out of 5
Sutton
You don’t need to offset the bit at all. Firstly, I presume when doing the male and female cuts you turned the jig over? Secondly, when you do your first cuts you need to pull the router towards you using the edge of the jig closest to you. Cut it all the way through. Then, without moving the jig, do a final run at full depth but this time push the router away from you using the edge of the jig furthest away from you. This gives you your matching cuts and the male/female ends match up.
Answered2 October 2019
2

Craig R Smith Limited

Rating: 5 out of 5
Benfleet
I like that answer, but given how much the solid wood tops would have cost and the cost of the jig, bush, cutter etc this highlights the importance of getting in a professional!
Answered5 October 2019
1

Anonymous user

I use Trend jig 1 cut the female joint put in place 2 put other part of work top (male )on top and mark it on the bottom if you have to cut whit the laminate down transfer the mark using masking tape 3.off set the jig 8.5 -9mm so the router bit touches the line whit one side and cut Why? because your router bush is 30mm-12.7 diameter of router bit=17.3mm :2=8.5mm
Answered2 October 2019
0