Trend TPC12 with zip fly mod

I have earned a bit of a reputation amongst the folk in my workplace for owning the same garments (and shoes) in multiple colours and wearing essentially the same uniform in different hues every day. Guilty as charged – this is my third pair of this pattern.

I’ve had this pair of ASOS trousers pinned for ages knowing that I wanted to recreate them – I’m physically incapable of buying RTW anymore due to that trifecta of horrible fit, crap fabrics and of course ethical and sustainability reasons. Luckily I found a duplicate of the fabric – this gorgeous creamy seeded denim from Merchant and Mills – and figured I could get a similar silhouette using Trend’s TPC12 utility trouser pattern yet again (previous pairs: 1,2).

I couldn’t however bring myself to sew the pattern’s crazy button fly situation again, and had it in mind that I could quite easily swap in a standard zip fly in its place. This took a bit of redrafting and relying on prior art but I’m really pleased with how it turned out.

If you want to have a go, here’s roughly what I did:
– Cut the centre front pieces with the cut-on fly extension on both sides. Interfaced the extension areas and sewed a zip in per my favourite instructions.
– Drafted a simple fly shield piece: this simply needs to be a rectangle the depth of the fly area and twice the width. It’s sewn right sides together around two edges, turned right sides out and the remaining long edge is overlocked. This is then sewn onto the fly underlap side – you could refer to any jeans pattern for similar construction order.
– For the waistband I used the Outer Left piece from the original pattern, cut as two pairs for the new outer and facing (the original pattern has a load of wackily-sized waistband pieces as the finishing around the fly is handled… unusually.). It just needed trimming down a bit at the front to fit. I decided to give the edge a point to reflect the thigh pocket design.

I made another modification too which was a bit of a hotfix for a fitting issue. For some reason, despite cutting the pattern down a size after my last pair because I wanted a neater fit, these turned out ginormous on first baste. I have no idea what happened but I was drowning in them – maybe this more rigid fabric meant they didn’t drape like my previous pairs but still. I took them in through every single seam I could, and also subsumed the back dart into a new seam which runs the entire length of the back leg.

This was a great move because the back thigh/knee area has been annoyingly baggy on both of my previous pairs so this kinda leg-princess-seam meant I could suck some of the excess out under the butt (although these are supposed to be loose/carrot-shaped so I didn’t want to over-fit either).

I think I’ll modify the paper pattern to reflect this change for next time – I’m pretty sure that true to form there’ll still be a next time (in indigo denim?!), especially now I can corner-cut on the fly situation.

4 thoughts on “Trend TPC12 with zip fly mod

  1. AvatarJo

    Wow! These are next level! The fit is fabulous and I’m in love with those vents. I had a chuckle when I read your fly solution – I routinely replace all flies with that Sandra Betzina one – it’s so fool proof and adds no bulk. I’m so tempted to try these out despite the hefty English pound price tag (Aussie dollars don’t go far atm!). Great likeness for your inspiration pair too!

  2. AvatarLia

    Ughhh should I buy this pattern? I’ve heard such mixed things, but I’m finding it hard to argue with these gorgeous trousers you made.

  3. AvatarMartha Tully

    The white trousers are exceptionally good! I don’t swing by your blog often, when I was by last I saw your carmel-colored Trend trousers and was really excited by those, but these white one, wow. I’d love to buy this pattern, but I do not enjoy grading up a size…or four. I’m impressed, you do excellent work.

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